C393 CompTIA A+ Core 1 All Topics

What type of motherboard socket is used to install a system memory?

(DIMM) Dual Inline Memory Module

Non-Ephemeral Ports

-permanent port numbers -ports 0 through 1023

Ephemeral Ports

-temporary port numbers -determined in real-time by the client -ports 1024 through 65535

Scenario: You are a technician working for an ISP in a large city. The ISP has assigned you to inspect and potentially replace structured cabling in an office building that recently changed owners. The new owners suspect there may be connectivity issues related to the existing wire. You inspect the permanent cabling structure. The cables are thinner than you had expected. They terminate to wall ports using insulation displacement connectors (IDC). You realize the "permanent cabling" is patch cable used incorrectly. You decide the best course of action is to replace the cable with the correct permanent cabling. You also see that there is damage to the CAT 5E patch cable running too many desks, which will need replacing Your company uses the TIA568B standard for tipping Category 5E cables with RJ45 tips. Use what you know about copper cabling and the correct networking tools to diagnose the existing cable structure. 1. To reduce the risk of _____, the maximum length of wire that should be untwisted when terminating permanent cabling is _____. 2. Based on the tool used, the permanent cabling was terminated by the ____ method.

1. Interference, 0.5 inches 2. IDC

Scenario: You are a technician working for an ISP in a large city. The ISP has assigned you to inspect and potentially replace structured cabling in an office building that recently changed owners. The new owners suspect there may be connectivity issues related to the existing wire. You inspect the permanent cabling structure. The cables are thinner than you had expected. They terminate to wall ports using insulation displacement connectors (IDC). You realize the "permanent cabling" is patch cable used incorrectly. You decide the best course of action is to replace the cable with the correct permanent cabling. You also see that there is damage to the CAT 5E patch cable running too many desks, which will need replacing Your company uses the TIA568B standard for tipping Category 5E cables with RJ45 tips. Use what you know about copper cabling and the correct networking tools to diagnose the existing cable structure. 1. The ____ allows technicians to perform a connectivity test on the port.

1. Loopback plug

Scenario: As a junior network engineer, your company has tasked you with designing a network for a new office space that they are setting up. You need to show all the necessary equipment to be purchased and set up. Once the company has approved your network design, the senior network engineer will order and work with you to set up the network. The company needs to select an Internet Service Provider that will handle an office of 500 employees that heavily utilize VoIP and collaboration tools, such as Zoom and Microsoft Teams. You have internet plans from two providers. One plan is a cable provider that offers 100Mbps download and 10Mbps upload. The other plan is a fiber optic provider that offers 1000Mbps download and 1000Mbps upload. You have priced both approximately the same. Notes and Requirements: 1. The company has one server that handles the domain controller and print management. The company conducts the rest of its work in the cloud with various providers. 2. The office will need to handle both hardwired and non-hardwired connections, as some devices are desktops and others are laptops that move around the office. 3. In building the network diagram, you'll be selecting devices that will determine which network type you choose. The devices will also determine the types of cables you'll need to choose to support the network. What are the appropriate network devices for each number labeled? 1__ 2__ 3__ 4__ 5__ Remote access needs: What Hardware? What Software? Cabling needs: From Provider to Office: __ From Access Point to Laptop: __ From Patch Panel to Server: __

1. ONT 2. Firewall/Router 3. Switch 4. Access Point 5. Patch Panel Hardware: None Software: VPN From Provider to Office: Fiber Optic From Access Point to Laptop: None From Patch Panel to Server: Ethernet

Scenario: Due to rising costs of hardware, your organization is weighing the idea of cloud-based solutions for the services your provide to your customers. However, each cloud deployment model and service option carries different benefits and disadvantages. You've been asked to give your management an overview of cloud-computing concepts so that they can make an informed decision as to which combination would be most beneficial to the company. Cloud Deployment Models: 1.___ 2.___ 3.___ 4.___ Cloud Service Model PaaS: IaaS: SaaS:

1. Private 2. Community 3. Public 4. Hybrid PaaS: Applications and Data IaaS: Applications, Data, Middleware, OS, Runtime SaaS: None.

Scenario: You are a technician working for an ISP in a large city. The ISP has assigned you to inspect and potentially replace structured cabling in an office building that recently changed owners. The new owners suspect there may be connectivity issues related to the existing wire. You inspect the permanent cabling structure. The cables are thinner than you had expected. They terminate to wall ports using insulation displacement connectors (IDC). You realize the "permanent cabling" is patch cable used incorrectly. You decide the best course of action is to replace the cable with the correct permanent cabling. You also see that there is damage to the CAT 5E patch cable running too many desks, which will need replacing Your company uses the TIA568B standard for tipping Category 5E cables with RJ45 tips. Use what you know about copper cabling and the correct networking tools to diagnose the existing cable structure. 1. As you cut a new cable length, you will need to ______ the cable. 2. Choose the appropriate tool: ____

1. Terminate 2. Punchdown tool

Scenario: You are a technician working for an ISP in a large city. The ISP has assigned you to inspect and potentially replace structured cabling in an office building that recently changed owners. The new owners suspect there may be connectivity issues related to the existing wire. You inspect the permanent cabling structure. The cables are thinner than you had expected. They terminate to wall ports using insulation displacement connectors (IDC). You realize the "permanent cabling" is patch cable used incorrectly. You decide the best course of action is to replace the cable with the correct permanent cabling. You also see that there is damage to the CAT 5E patch cable running too many desks, which will need replacing Your company uses the TIA568B standard for tipping Category 5E cables with RJ45 tips. Use what you know about copper cabling and the correct networking tools to diagnose the existing cable structure. 1. As you test the new cable using a cable tester, both LEDs activate on each end of the cable in sequence. This indicates that ____.

1. The port can send and receive.

You are configuring four 120 GB drives in a RAID 5 array. How much space will be available?

360 GB.

What is the bandwidth of a PCIe v2.0 x16 graphics adapter?

8 GBps in each direction (full-duplex). PCIe v2 supports 500 MBps per lane.

Why can cache improve performance?

A CPU tends to repeat the same routines and access the same data over and over again. If these routines are stored in fast cache RAM, they can be accessed more quickly than instructions and data stored in system memory.

Accessed by only servers, a network uses Fiber Channel adapters to implement connections. What type of network is this?

A Storage Area Network (SAN).

What type of network has no specific geographical restrictions?

A Wide Area Network (WAN) can span any geographical distance.

A network uses an IEEE 802.11 standard to establish connections. What type of network is this?

A Wireless Local Area Network (WLAN).

You need to connect permanent cable to the back of a patch panel. Which networking tool might help you?

A cable stripper to remove the jacket insulation and a punchdown tool to terminate the wire pairs into insulation displacement connector (IDC) blocks.

You receive a support call from a user of one of the company's computer-aided design (CAD) workstations. The user repots that a notification "RAID utility reports that the volume is degraded" is being displayed. A recent backup has been made. What should you do to try to restore the array?

A degraded volume is still working but has lost one of its disks. In most RAID configurations, another disk failure would cause the volume to fail, so you should add a new disk as soon as possible (though do note that rebuilding the array will reduce performance).

A network owner has configured three web servers to host a website. What device can be deployed to allow them to work together to service client requests more quickly?

A load balancer.

What is the main security requirement of a virtualization workstation configured to operate VMs within a sandbox?

A sandbox means that the VM environment should be isolated from the host and from other VM environments. A sandbox is often used to investigate malware. If the sandbox is secure, the malware can be executed and observed without the risk of it spreading to other systems (VM escaping).

A host is configured with the IP address 172.16.1.100 in the 172.16.1.0/16 IP network. What value should be entered as the subnet mask?

A subnet mask field uses dotted decimal format. The /16 network prefix means that the first 16 bits in the mask are set to one: 11111111 11111111 00000000 00000000. A whole octet of ones converts to 255 in decimal. Therefore, the dotted decimal mask is 255.255.0.0.

You are recommending that a small business owner replace separate firewall and anti-malware appliances with a UTM. What is the principal advantage of doing this?

A unified threat management (UTM) appliance consolidates the configuration, monitoring, and reporting of multiple security functions to a single console or dashboard. You might also mention that the UTM might provide additional functionality not currently available, such as intrusion detection, spam filtering, or data loss prevention.

Why must a vendor account usually be configured on a smartphone?

A vendor account, such as an Apple, Google, or Samsung account, is required to use the App Store.

Question A support technician is installing a new SATA hard drive on a new computer. What is the best type of cable connector the technician will plug in to supply power to the drive? A.15-pin connector B.7-pin connector C.4-pin connector D.USB connector

A. 15-pin connector

Question A network technician is upgrading the wireless network so that it can take advantage of "multiple input multiple output" (MIMO) to increase reliability and bandwidth. What standard is the technician upgrading the wireless network to? A.802.11n B.802.11g C.802.11b D.802.11a

A. 802.11n

Question A network technician is checking the records to ensure all the host names match up with the proper IP addresses for the network. What records is the technician checking? (Select all that apply.) A.A B.MX C.FQDN D.AAAA

A. A D. AAAA

Question A hardware technician is ordering power supply units (PSUs) for the organization's desktop computers. What type of form factor is the technician looking for the PSUs to have from the list below? A.ATX B.SFF C.PCIe D.Mini-ITX

A. ATX

Question: A support technician is working on a motherboard that is 12" x 9.6" and has seven expansion slots. Which form factor is the technician working with? A. ATX B. mATX C. SFF D. Mini-ITX

A. ATX

Question A user complains that when typing on a laptop keyboard, the mouse cursor slowly moves across the screen. What actions can the help desk perform to prevent this mouse behavior from happening? (Select all that apply.) A.Adjust the sensitivity setting. B.Disable the touchpad. C.Update the driver. D.Replace the keyboard.

A. Adjust the sensitivity setting. B. Disable the touchpad C. Update the driver.

A network technician is troubleshooting an issue where a wireless device only receives an intermittent signal. What could be a possible cause of this? (Select all that apply.) A.Another radio source is broadcasting at the same frequency. B.There is Wi-Fi analyzer software running. C.There is an electromagnetic source nearby. D.Something is blocking the signal.

A. Another radio source is broadcasting at the same frequency. C. There is an electromagnetic source nearby D. Something is blocking the signal.

A student is learning about computer hardware and the instructor selects them to identify the component that executes program instruction code. How should the student respond? A.CPU B.RAM C.Cache D.HDD

A. CPU

A hardware technician is reinstalling a heat sink with a central processing unit (CPU). Which of the following steps should the technician take to reinstall the heat sink without damaging the socket? (Select all that apply.) A.Clean it. B.Thermal paste. C.Pop up the CPU at a 45º angle. D.Wear an ESD wrist strap.

A. Clean it B. Thermal Paste D. Wear an ESD wrist strap

A network technician needs to create a sandbox that has an isolated environment to analyze viruses, worms, and Trojans. What is the most appropriate environment for the technician to do this in? A.Client-side virtualization B.Server-side virtualization C.Application virtualization D.Container virtualization

A. Client-side virtualization

Question A desktop technician just fixed an issue where a computer would not connect to a network and verified the computer is communicating with the network again. What should the technician do now that will help with future troubleshooting efforts? A.Document findings. B.Test the theory. C.Establish a plan of action. D.Refer to vendor instructions.

A. Document findings.

A desktop technician was troubleshooting a computer that would not connect to the network and suspected that the network interface card (NIC) was not working. However, when the technician tested the NIC, it was working. What will the technician do next? A.Establish a new theory. B.Implement a plan of action. C.Test the theory. D.Implement preventive measures.

A. Establish a new theory.

Question A network technician troubleshoots a computer that is getting a limited connectivity message and an address in the automatic IP addressing (APIPA) 169.254.x.y range instead of receiving a lease for an IP configuration from the DHCP server. What are some steps the technician should take to troubleshoot this issue? (Select all that apply.) A.Establish the scope of the issue. B.Check the configuration of patch cords. C.Check the VLAN configuration. D.Sample the elapsed time between arriving packets.

A. Establish the scope o the issue. B. Check the configuration of patch cords. C. Check the VLAN configuration.

Question An organization that does not support the autodiscovery feature for email servers is deploying new phones to its team. A user is configuring their email server on their new device. What will the user enter in the incoming mail server field? (Select all that apply.) A.FQDN B.IP address C.SMTP server address D.Ports

A. FQDN B. IP address

Question A company uses cell phones that do not have SIM cards and that Verizon manages. The company wants to buy 3G cell phones that have SIM cards so they can switch to any chosen provider. In which network type does the company want to upgrade? A.GSM B.CDMA C.PRL D.LTE

A. GSM

Question: A support technician is installing a PCIe card that will use a combination of system memory and dedicated memory. What type of card is the tech installing? A.Graphics B.Sound C.NIC D.Wi-Fi

A. Graphics

A hardware technician is scanning a computer's non-volatile storage devices for errors and infections. Which of the following will the technician include in the scanning? (Select all that apply.) A.Hard disk drives B.Solid-state drives C.Random access memory D.Mass storage devices

A. Hard disk drives B. Solid-state drives D. Mass storage devices

A traveling user looks to purchase a smartphone that has a high tolerance for differing environments. This includes indoor and outdoor use. What ingress protection (IP) rating does the user look for when wanting to protect the device from solids as best as possible? A.IP67 B.IP57 C.IP58 D.IPX8

A. IP67

Question A user states that a mobile phone does not hold a very good charge. What might the cause be? (Select all that apply.) A.Improper battery charging B.Lack of power management C.An aging battery D.Daily use of the device

A. Improper battery charging B. Lack of power management C. An aging battery

A support technician opened a PC case and observed a modern small computer system interface (SCSI) connector plugged into the motherboard. What can the technician know to be true about the connector? A.It connects the hard disk. B.It's using serial communications. C.It transfers data 1 bit at a time. D.It only supports 1 device at a time.

A. It connects the hard disk.

Question A network technician troubleshoots an issue where the video conferencing system keeps freezing up and dropping out. The technician determines that the router is not processing the signal fast enough. What is this type of issue known as? A.Latency B.VoIP C.QoS D.Jitter

A. Latency

Question A technician needs to replace a solid-state disk (SSD) in a user's laptop. The technician requested the purchasing department to order a drive that fits into a PCI Express bus. Which drive type does the purchasing department order? A. M.2 B. mSATA C. SATA D. uSATA

A. M.2.

Question A hardware technician installed a new power supply unit (PSU) in a workstation and removed any unnecessary power connector cables. What type of PSU did the technician install? A.Modular B.Redundant C.ATX D.ATX12V

A. Modular

Question A printer support technician at a corporate office receives a call from the administrative office that their laser printer is online, but office employees can not print. When examining the printer, the technician finds paper lodged in the fuser unit. What type of error is this? A.Paper jam B.Print quality issue C.Carriage mechanism fault D.Incorrect page orientation

A. Paper jam

Question A network technician uses a switch configuration interface to see how long the port remains in the up state and that it is continually transitioning between up and down states. What does the network technician witness? A.Port flapping B.Slow network speeds C.RSSI D.QoS

A. Port flapping

Question An employee receives a brand-new inkjet printer. The output prints documents and photos that appear skewed. What is the correct maintenance step the employee needs to perform on the printer? A.Print head alignment B.Print head cleaning C.Load roller replacement D.Eject roller replacement

A. Print head alignment

Question A desktop technician determined that a computer could not connect to the network because the network drop was not working. What possibilities are open to the technician for getting the computer back on the network? (Select all that apply.) A.Repair the drop. B.Implement preventive measures. C.Replace the drop. D.Implement a workaround.

A. Repair the drop. C. Replace the drop. D. Implement a workaround.

Question All the employees in a lawyer's office communicate with the internet and each other through the same appliance. What kind of network is the office using? A.SOHO B.Zigbee C.PAN D.MAN

A. SOHO

Question A network technician needs to deploy a computer on an Ethernet network and notices that the computer will sit on a shelf directly under a fluorescent light. What type of cable will the technician use? A.STP B.UTP C.Coax D.Fiber optic

A. STP

Question Rather than purchasing a fixed number of software licenses, a business only wants to pay for the number of licenses they actually need at any given time. What kind of cloud service model is this business pursuing? A.SaaS B.IaaS C.PaaS D.DaaS

A. SaaS

Question A hardware technician is inspecting the notches on a dual inline memory module (DIMM) edge. What will the notches on the edge connector help the hardware technician determine? (Select all that apply.) A.The DDR generation B.If it is compatible with the slot C.How to insert it properly D.If it has a heat sink

A. The DDR generation B. If it is compatible with the slot C. How to insert it properly

Question A network technician is setting static IPv4 addresses on servers. Which settings would be considered optional for ensuring proper communications within a local area network? (Select all that apply.) A.The gateway B.The alternate DNS C.IP address D.Subnet mask

A. The gateway B. The alternate DNS

Question An application uses Transmission Control Protocol (TCP) as it requires data to make it to the destination 100% intact. Which of the following are functions of this protocol? (Select all that apply.) A.Uses SYN/ACK packets. B.Uses TFTP. C.Uses negative acknowledgment. D.Uses FIN.

A. Uses SYN/ACK packets C. Uses negative acknowledgement D. Uses FIN.

Question A network technician gathers requirements to implement virtualization. Which of the following resource requirements will the technician need to employ? (Select all that apply.) A.Virtualization support enabled on the CPU B.Memory above what the OS requires C.Low storage requirements D.A virtual network environment

A. Virtualization support enabled on the CPU B. Memory above what the OS requires D. A virtual network environment

Which of the following TCP ports is used by the Internet Message Access Protocol (IMAP)? A.) 143 B.) 389 C.) 443 D.)636

A.) 143

An SNMP Agent receives requests on UDP port: A.) 161 B.) 137 C.) 162 D.) 138

A.) 161

TCP port 80 is assigned to: A.) Hypertext Transfer Protocol (HTTP) B.) Hypertext Transfer Protocol over TSL/SSL (HTTPS) C.) Internet Message Access Protocol (IMAP) D.) Lightweight Directory Access Protocol (LDAP)

A.) Hypertext Transfer Protocol (HTTP)

Post Office Protocol v3 (POP3) uses: A.) TCP port 110 B.) UDP port 123 C.) TCP port 143 D.) UDP port 161

A.) TCP port 110

Which of the following ports is assigned to the Domain Name System? (DNS)? A.) 53 B.)67 C.)110 D.)389

A.)53

Following some past issues with faults arising in print devices because of improper setup procedures, you are updating the company's work instructions for printer installation. You have noted that technicians must refer to the product instructions, use safe lifting techniques, and ensure removal of packing strips. What additional guidance should you include?

Allow the print device to acclimate for a few hours after unboxing to avoid risks from condensation.

What type of value would you expect a query for an AAAA resource record to return?

An IPv6 address.

You are assisting another customer with a full fiber connection terminated to an optical network terminal (ONT). The customer's router was disconnected while some building work was being completed, and the patch cable is now missing. The customer thinks that the cable should be a fiber optic one because the service is "full fiber". What type of cable do you need to locate?

An RJ45 unshielded twisted pair (UTP) patch cable. The ONT converts the optical signal over the external fiber optic cable to an electrical one to connect to the local router.

A company has contracted the use of a remote datacenter to offer exclusive access to platform as a service resources to its internal business users. How would such a cloud solution be classed?

As a private deployment model.

What cause might you suspect if a PC experiences intermittent lockups?

Assuming the cause is not related to software or device drivers, then thermal or power problems are most likely. Loose connections, faulty system components (motherboard, CPU, and memory), and corruption of OS files due to bad sectors/blocks are also possibilities.

You are setting up an ADSL router/modem for a client; unfortunately, the contents of the box have become scattered. What type of cable do you need to locate to connect the router's WAN interface?

Asymmetrical Digital Subscriber Line (DSL) connects to the phone line via a filter. You need an RJ11-terminated patch cord to make the connection.

Question A technician must determine why a computer is overheating. Which of the following may be the cause? (Select all that apply.) A.Blanking plates are covering holes. B.A fan is not working. C.The room is too warm. D.There is an invalid cable specification.

B. A fan is not working. C. The room is too warm.

A technician started a PC and, when the vendor's logo came up, pressed the F10 key. What is the technician doing? A.Restarting the PC B.Accessing the system setup program C.Setting a boot password D.Enabling secure boot

B. Accessing the system setup program.

Question A support technician needs to connect the USB port on a portable monitor to an HDMI port on a laptop to extend the laptop's display. What kind of cable will the technician use to accomplish this? A.SCSI B.Adapter C.EIDE D.DVI

B. Adapter

A technician is upgrading the system firmware on a PC. Which of the following is the technician upgrading? (Select all that apply.) A.System settings B.BIOS C.Secure boot D.UEFI

B. BIOS D. UEFI

Question: A computer is processing software instructions on the central processing unit. How is all computer software broken down to be processed? A.Bus B.Binary C.RAM D.System clock

B. Binary

Question: A support technician manages mostly digital displays but has some older computers with video cards that can support both analog and digital monitors. What type of video interface do these older computers have? A. HDMI B. DVI C. VGA D. DisplayPort

B. DVI

Every time a user attempts to save a file, the computer shows an error that reads, "Cannot read from the source disk." What kind of issue does this indicate? A.POST issue B.Drive issue C.Power issue D.RAID failure

B. Drive issue

Question A hardware technician is working on a new desktop that can send 128 bits of data per transfer rather than 64 bits. What is this referred to as? A.Single channel B.Dual channel C.Triple channel D.Quadruple channel

B. Dual channel

A hardware technician is building a server that will process financial data in real time and wants to use error correcting code (ECC) RAM that will detect and correct errors, if possible. What other considerations will the technician need to include to support the ECC RAM? (Select all that apply.) A.Heat sinks B.Extra processor chip C.72-bit data bus D.Two 64-bit data buses

B. Extra processor chip C. 72-bit data bus

Question A web designer plans out a new website, including the uniform resource locators (URLs) for each page. What are parts of the URL that the web designer will need to consider? (Select all that apply.) A.File server B.FQDN C.Protocol D.File path

B. FQDN C. Protocol D. File path

An engineer is designing a new computer system and wants to provide active cooling to improve airflow and dissipate heat from around the components. What will the engineer use in the system? A.Heat sinks B.Fans C.Thermal paste D.Thermal pads

B. Fans

Question A user's smartphone allows them to bypass the screen lock using biometric authentication. Which of the following are biometric authentication methods the user can configure? (Select all that apply.) A.PIN B.Fingerprint reader C.Facial recognition D.Voice recognition

B. Fingerprint reader C. Facial recognition D. Voice recognition

A network technician is purchasing cellular phones for people who are travelling to a rural area and wants to make sure they will work with the most networks, as the areas do not have the latest cellular technology. What type of phones will help the technician accomplish this? A.CDMA B.GSM C.Firewall D.Router

B. GSM

Question When an employee prints to a newly installed printer, the printed pages only have a few characters on each page. What type of error is this? A.Print quality issue B.Garbled print issue C.Printer connectivity issue D.Print spooler issue

B. Garbled print issue

Question A technician using the adapter that the manufacturer built into a computer's motherboard wants to join a computer to a new and upgraded network that still uses the most common type of cable to connect. What kind of network is the company using? A.Fast Ethernet B.Gigabit Ethernet C.Fiber optic D.Wi-Fi

B. Gigabit Ethernet

Question To mitigate the heat a high-end gaming system will generate, an engineer is using a liquid-based cooling system in the design. Which of the following components are NOT a part of an open-loop, liquid-based cooling system? A.Fans B.Heat sinks C.Water blocks D.Water loop

B. Heat Sinks

Question A technician is troubleshooting an issue with a computer. Although the computer is on the network, the server will not authenticate a user. What kind of problem does this indicate? A.Disk failure B.Inaccurate date/time C.Cabling issues D.Overheating

B. Inaccurate date/time

Question A network technician sets up the wireless network in such a way that each client device connects to the network via an access point (AP). What type of configuration is this? A.Frequency bands B.Infrastructure mode C.DFS D.Channels

B. Infrastructure mode

Question An employee prints documents and photos on the office inkjet printer, but they are printing in the wrong color. What is the correct maintenance step the employee needs to perform on the printer? A.Print head cleaning B.Ink cartridge replacement C.Print head alignment D.Eject roller replacement

B. Ink cartridge replacement

Question A company uses a database that a developer wrote in-house. Since the database is not supported and the developer has left the organization, what is the database considered to be? A.BYOD B.Legacy system C.Embedded system D.UTM

B. Legacy system

Question An organization located on a large piece of rural property needs to connect its office building on the north side of the property with its warehouse and shipping operation on the south side of the property. The organization decides to connect the locations using long-range fixed wireless. What frequency spectrum must the organization use to ensure that nobody else can use the same frequency band? A.Unlicensed B.Licensed C.802.11ax D.DFS

B. Licensed

Question A technician is troubleshooting a computer that will not turn on. The technician has verified that the wall socket and devices leading to the computer are working correctly. What could remain as an issue? (Select all that apply). A.On-premises distribution circuit B.Motherboard C.Power supply unit D.Power grid

B. Motherboard C. Power supply unit

A software developer is creating an application that will run multiple parallel threads through the central processing unit (CPU) at the same time to reduce the amount of "idle time" the CPU spends waiting for new instructions to process. What type of process is the developer taking advantage of? A.Multi-socket B.Multithreading C.Multicore D.Processor extensions

B. Multithreading

Question A network administrator configures an authentication, authorization, and accounting (AAA) server. Which component in the AAA server setup does not store authentication credentials, but acts as a transit to forward data between devices? A.Supplicant B.NAP C.RADIUS D.AAA

B. NAP

Question A technician is troubleshooting a projector that keeps randomly shutting down. What is the most likely cause? A.Burned-out bulb B.Overheating C.Loose cable between the monitor and display D.Incorrect data source

B. Overheating

Question A support technician at a corporate office needs to recommend a new laser printer for the administrative office. One of the considerations is the speed of the printer. How is the basic speed of a printer measured? A.Output tray capacity B.Pages per minute (PPM) C.Dots per inch (DPI) D.Pixels per inch (PPI)

B. Page per minute (PPM)

A laptop has an internal battery that requires tools to access and remove. What step should a repair technician take prior to opening the laptop to install a replacement? (Select all that apply.) A.Discharge the battery. B.Power the laptop off. C.Disconnect the AC power. D.Charge the battery.

B. Power the laptop off. C. Disconnect the AC power.

Question The office inkjet printer is missing lines when it is printing. What is the correct maintenance step that needs to be performed in the printer? A.Print head alignment B.Print head cleaning C.Load roller replacement D.Eject roller replacement

B. Print head cleaning

Question For security reasons, an organization needs to ensure that its information is isolated and managed only by its employees. What cloud model should this organization adopt? A.Public B.Private C.Community D.Hybrid

B. Private

Question Company employees access the same resources on the internet many times a day. As such, a network administrator configures a solution that forwards traffic to and from the internet and also caches content to improve performance and reduce bandwidth consumption. What solution is the administrator implementing? A.NAT B.Proxy server C.UTM D.Load balancer

B. Proxy Server

Question A network technician needs to replace a broken Ethernet cable. What kind of connector will the technician use to terminate the new cable? A.F-type B.RJ-45 C.SC D.LC

B. RJ-45

Question A user notices that a smartphone is not functioning properly. Switching between applications takes an excessive amount of time. What symptoms should a technician look for? A.Power drain B.Resource usage C.Data usage D.Malware activity

B. Resource usage

Question An energy company is upgrading its systems. The company would like to control the systems with software that communicates with the current programmable logic controllers (PLCs) and new RTUs. What kind of system is the company upgrading to? A.OT B.SCADA C.Embedded system D.ICS

B. SCADA

A hardware technician is purchasing mass storage devices and tells the salesperson that they must use flash memory technology. What type of devices will the salesperson show the technician? A.HDD B.SSD C.RAM D.CDs

B. SSD

A technician loans a laptop to employees when they go on travel and each time an employee returns the laptop the technician reformats it and reloads the operating system and all the software. After several years of following this process, the laptop is sluggish and often freezes. What is most likely to cause this to happen? A.Motherboard B.SSD C.RAM D.CDs

B. SSD

Question A network technician trains a new employee on the company devices they received during orientation. Which devices will have both a front and rear camera? (Select all that apply.) A.Digital camera B.Smartphone C.Tablet D.Webcam

B. Smartphone C. Tablet

Question An application developer wants to ensure packets arrive at the destination in the correct order and none are lost when an application communicates across the network. Which protocol will the application developer use? A.UDP B.TCP C.IP D.DNS

B. TCP

Question A technician is implementing a feature that will compare hashes of key system state data during the boot process to ensure that nobody has tampered with the system firmware, boot loader, and OS kernel. What feature is this? A.HSM B.TPM C.Encryption D.Boot password

B. TPM

A hardware technician is following CompTIA's A+ troubleshooting model for diagnosing a monitor with a squiggly screen. The technician suspects the monitor screen is squiggly because it is located directly under a fluorescent light. What is the next step the technician should take? A.Identify the problem. B.Test the theory. C.Establish a plan of action. D.Verify full system functionality.

B. Test the theory.

Which of the following statements regarding most connectors and ports is NOT true? A.They use edge contacts. B.They use internal connection points. C.They sometimes use keying. D.They can be reversible.

B. They use internal connection points.

Question A support technician needs to install an optical disk drive in a new tower. Which panel should be removed so that the technician can gain access to the optical drive and connect the cables? A.Through the top panel B.Through the side panel C.Through the rear panel D.Through the bottom of the rear panel

B. Through the side panel

Question A network technician installs virtual machines in hypervisor software that runs on a host operating system (OS). What kind of hypervisor setup is this? (Select all that apply.) A.Type 1 B.Type 2 C.Guest OS D.Bare metal

B. Type 2 C. Guest OS

An employee is leaving the company and must return any removable storage devices they may have. What devices will the employee most likely return? (Select all that apply.) A.Wireless card B.USB flash drive C.SD card D.RAM

B. USB flash drive C. SD card

A user would like to take advantage of biometric technology for a quicker and more secure login to a laptop. The user discovers the laptop has no built-in technology for biometrics. What solution does the IT department offer? A.Near-field scanner B.USB peripheral device C.Keyboard replacement D.Touchpad replacement

B. USB peripheral device

Question A network technician is connecting a computer to the network using Ethernet. How is the physical connection to the cable made? A.Using the MAC address B.Using the RJ45 port C.Using a patch panel D.Using PoE

B. Using the RJ45 port.

Question A company hired a network technician to manage the part of their network that is based on the 802.11 standard. What type of network will the technician be managing? A.LAN B.Wi-Fi C.MAN D.WAN

B. Wi-Fi

TCP port 389 is the default network port for: A.) RDP B.) LDAP C.) SMB D.) LDAPS

B.) LDAP

Which of the following protocols runs on TCP port 445? A.) HTTPS B.) SMB/CIFS C.) IMAP D.) H.323

B.) SMB/CIFS

Which port enables the FTP's Data Connection for sending file data? A.) UDP port 20 B.) TCP port 20 C.) UDP port 21 D. TCP port 21

B.) TCP port 20

Which of the following is used by HTTPS? A.) TCP port 80 B.) TCP port 443 C.) UDP port 53 D.) TCP port 143

B.) TCP port 443

Question A support technician at a corporate office needs to recommend a new laser printer for the administrative office. The office personnel requests a printer that will automatically print on both sides of the paper. What does the technician need to look for to make the proper decision on which printer to purchase? A.Paper handling B.Duplex unit C.Finisher unit D.Input tray capacity

B.Duplex Unit

A laptop user reports that they are only getting about two hours of use out of the battery compared to about three hours when the laptop was first supplied to them. What do you suggest?

Batteries lose maximum charge over time. It may be possible to recondition the battery or to use power-saving features, but the only real way to restore maximum battery life is to buy a new battery.

Ticket 4: A user is reporting that the date and time displayed on their desktop are extremely inaccurate. To solve this, replace the RTC ____ in the motherboard.

Battery

You are labeling spare parts for inventory. What type of motherboard is displayed here?

Both Micro-ATX and Mini-ITX are square form factors, but Mini-ITX is 6.7 inches square, while Micro-ATX is 9.6 inches x 9.6 inches.

Ticket 8: A user reports that they heard something "pop" in an overhead projector. This is sounds caused by a burned-out ____.

Bulb

Ticket 6: A user reports that there is a ghost image of a document on their display. This is most likely due to ____.

Burn-in

Question What type of printer builds a solid object from successive layers of material? A.Inkjet printer B.Laser printer C.3-D printer D.Thermal printer

C. 3-D printer

An administrator needs to supply power to a handset through the switch; however, the switch does not support Power over Ethernet (PoE). How can the administrator solve this problem? A.A managed switch B.An unmanaged switch C.A power injector D.A hub

C. A power injector

Question A network technician troubleshoots a computer on the wired network that is experiencing slow network speeds. Which of the following would NOT be a possible cause for the technician to troubleshoot? A.Improperly terminated patch cords B.Improper speed/duplex configuration C.Another radio source broadcasting at the same frequency D.External interference on the cable

C. Another radio source broadcasting at the same frequency

Question A developer wants to ensure that all the clients that use their application are always using the latest most updated version. How can the developer make sure of this? A.Client-side virtualization B.Server-side virtualization C.Application virtualization D.Container virtualization

C. Application Virtualization

A support technician opened the case to a PC and saw a square socket component. What component has the support tech located? A.RAM B.Adapter C.CPU D.Drive

C. CPU

Question A network technician used a tool that energizes each wire in a cable. When the technician sent energy to some of the wires, the LED on the tool did not light up. What tool was the technician using? A.Toner probe B.Tone generator C.Cable tester D.Loopback plug

C. Cable tester.

Question A printer support technician at a corporate office receives a call from the administrative office that the office inkjet printer is online but it is making grinding noises when attempting to print. What type of error is this? A.Paper jam B.Print quality issue C.Carriage mechanism fault D.Incorrect page orientation

C. Carriage mechanism fault

A desktop technician has responded to a user whose computer is running slow. The user claims they did not do anything that would cause the computer to run slow. What should the technician do to try to determine the probable cause of the problem? (Select all that apply.) A.Repair the problem. B.Document the findings. C.Conduct research. D.Question the obvious.

C. Conduct research. D. Question the obvious.

Question A technician is troubleshooting a failed redundant array of independent disks (RAID) configuration and is unable to access the RAID configuration utility. What does this indicate? A.Disk failure B.Boot process failure C.Controller failure D.Multiple disk failure

C. Controller failure.

Question A network technician is configuring hosts to request IP configuration from a server. What protocol is the technician configuring? A.HTTPS B.SSH C.DHCP D.TFTP

C. DHCP

Question A technician plans a memory upgrade for a fleet of laptops for sales users. When evaluating the various types of dual in-line memory modules, what module types are ultraportable and significantly smaller than other module types? (Select all that apply.) A.Mini-DIMM B.Micro-DIMM C.DIMM D.SODIMM

C. DIMM D. SODIMM

Question A support technician at a corporate office needs to recommend a new multifunction printer for the administrative office. Since the office commonly prints and scans photos and high graphic items, the technician needs to select a multifunction printer that will meet this need. What characteristics should the technician review to choose the correct multifunction printer? (Select all that apply.) A.Output tray capacity B.Pages per minute (PPM) C.Dots per inch (DPI) D.Pixels per inch (PPI)

C. Dots per inch (DPI) D. Pixels per inch (PPI)

Question A warehouse user reports an issue with a laptop to the IT helpdesk. The issue is that the laptop becomes very hot after only a few minutes of use whether it is plugged in or not. The user states that laptop use is under the usual circumstances. What does IT conclude the likely problem to be? A.Faulty AC adapter B.Battery discharging C.Dust and debris D.Room temperature

C. Dust and debris

Question A web designer is securely uploading files to a web server. What protocol is the designer using to do this? A.SMB B.NetBIOS C.FTPS D.FTP

C. FTPS

Question A user started a brand-new Windows computer and received a "boot device not found" error. When the technician inspects it, what will they suspect the problem is? A.POST B.BSOD C.GPT D.Pinwheel

C. GPT

Question A network technician is working from a coffee shop and does not want to use their insecure wireless connection. What can the technician enable on his smartphone to provide his laptop with his own Wi-Fi connectivity? A.Airplane mode B.Cellular data networking C.Hotspot D.Bluetooth

C. Hotspot

Question A small company hired a network technician to upgrade its network. Surprisingly the company was still using a legacy hardware device that configures a network into a star topology. What device was this? A.Managed switch B.PoE-enabled switch C.Hub D.Patch panel

C. Hub

Question A technician is installing new RAM in a company's workstations. The IT supervisor wants all computers to have ECC RAM to ensure high levels of reliability. Which features are not associated with ECC RAM? (Select all that apply) A.The motherboard and the CPU must support ECC operation for it to be enabled. B.Most motherboards support either UDIMMs or RDIMMs, but not both. C.If a motherboard supports UDIMM, you can use both types synchronously. D.Mixing non-ECC UDIMMs and ECC UDIMMs will work with each other.

C. If a motherboard supports UDIMM, you can use both types synchronously. D. Mixing non-ECC UDIMMs and ECC UDIMMs will work with each other.

A network technician is purchasing new displays for the graphics design team. Which type of thin-film transistor (TFT) will be optimal for supporting that type of work? A.TN B.Digitizer C.In-plane switching D.VA

C. In-plane switching.

Question A college that has several campuses located in different parts of the city has hired a network technician. What type of network will the technician be working on? A.LAN B.Wi-Fi C.MAN D.WAN

C. MAN

Question Enterprises use different deployment models to specify how they provision mobile devices and apps for employees. Which function of enterprise management allows the organization to perform remote wipes on devices? A.App store B.EMM C.MDM D.MAM

C. MDM

Question A technician started up a computer and the power-on self-test (POST) issued a short beep. What does this indicate? A.Motherboard problem B.Faulty speaker C.Normal POST D.POST error

C. Normal POST

A technician retrieved a computer from storage, powered it on, and shortly began to notice a burning smell. What does this indicate? A.Disk failure B.Cabling issues C.Overheating D.Inaccurate date/time

C. Overheating

Question A technician is wirelessly transferring pictures from their camera to their computer. What kind of network does the technician establish? A.Wi-Fi B.LAN C.PAN D.WLAN

C. PAN

A network technician configures a foundational cloud setup that will allow the developers to start all application development using a standardized server and database setup. What type of cloud service model is the technician configuring? A.SaaS B.IaaS C.PaaS D.DaaS

C. PaaS

Question A support technician at a corporate office needs to recommend a new laser printer for the administrative office. The office prints multiple types and sizes of documents, labels, envelopes, and other materials. What does the technician need to look for to make the proper decision on which printer to get? A.Output tray capacity B.Pages per minute (PPM) C.Paper handling D.Input tray capacity

C. Paper handling

A support technician is connecting an extended integrated drive electronics (IDE) cable to a PC's motherboard and knows that pin 1 on the cable must match up with pin 1 on the port. How can the tech know where pin 1 is on the cable? A.Pin 1 has a blue stripe. B.Pin 1 has a black stripe. C.Pin 1 has a red stripe. D.Pin 1 has a grey stripe.

C. Pin 1 has a red stripe.

Question A technician is troubleshooting a video display that is fuzzy. What has caused this? A.Insecure connector B.Burn-in C.Resolution mismatch D.Incorrect color display

C. Resolution mismatch

A hardware technician is tearing apart a non-functioning computer to salvage parts and pulls out a memory stick that synchronizes its speed to the motherboard system clock. What type of memory has the technician removed? A.DDR SDRAM B.Dynamic RAM C.SDRAM D.ECC RAM

C. SDRAM

A company hired an administrator to manage their computers that host the employees' shared resources and applications. What kind of computers will the administrator manage? A.Client B.SAN C.Server D.Datacenter

C. Server

A network technician is trying to locate the Cat 6A cable in a closet full of unmarked boxes with different types of cabling in them. How will the technician be able to tell which cable is Cat 6A? (Select all that apply.) A.The words "twisted pair cable" is on the cable jacket. B.The TIA/EIA standard is on the cable jacket. C.The Cat specification is on the cable jacket. D.The cable type is on the cable jacket.

C. The Cat specification is on the cable jacket. D. The cable type is on the cable jacket.

Question: A support technician needs to install a legacy peripheral component interconnect (PCI) sound card. Which of the following statements about PCI is NOT true? A.PCI Express supersedes PCI. B.PCI uses parallel communications. C.The PCI card can fit into the PCIe slot. D.PCI is software compatible with PCIe.

C. The PCI card can fit into the PCIe slot.

Question A network technician must allow employee computers to securely connect to the corporate network from alternate locations. What is the best method for the technician to use? A.DMARC B.DHCP scope C.VPN D.VLAN

C. VPN

Which of the port numbers listed below are reserved for NetBIOS services? (Select 3 answers) A.) 135 B.) 136 C.) 137 D.) 138 E.) 139

C.) 137 D.) 138 E.) 139

An SNMP management station receives SNMP notifications from Agents on the UDP port: A.) 161 B.) 137 C.) 162 D.) 138

C.) 162

The FTP's Control Connection for administering a session is established through: A.) TCP port 20 B.) UDP port 20 C.) TCP port 21 D.) UDP port 21

C.) TCP port 21

A network technician uses Remote Desktop Protocol (RDP) client on their Windows OS to remotely troubleshoot a problem on another Windows machine. Which of the following ports needs to be opened for the built-in Windows RDP server to allow this type of network connection? A.) TCP port 1720 B.) TCP port 636 C.) TCP port 3389 D.) TCP port 445

C.) TCP port 3389

Dynamic Host Configuration Protocol (DHCP) runs on: (Select 2 answers) A.) UDP port 65 B.) UDP port 66 C.) UDP port 67 D.) UDP port 68 E.) UDP port 69

C.) UDP port 67 D.) UDP port 68

What is number 8?

CMOS Battery

Ticket 3: A user is reporting that their PC is constantly crashing and rebooting. This is likely due to the _____ overheating.

CPU

What is number 4?

CPU/CPU Socket

Ticket 5: A user attempts to create digital art, but it does not appear clean. To solve this, the display should be ____ to scanning devices.

Calibrated

You are performing a wiring job, but the company wants to purchase the media and components from another preferred supplier. The plan is to install a network using copper cabling that will support Gigabit Ethernet. The customer is about to purchase Cat 5e cable spools. What factors should they consider before committing to this decision?

Cat5e will meet the requirement and will cost the least. Cat 6 offers better performance without adding too much cost. Cat 6A would be the best choice for supporting future requirements, but it is likely to cost more than the customer is budgeting for.

You are trying to install Windows from the setup disc, but the computer will not boot from the DVD. What should you do?

Check that the boot order in system setup is set correctly. If the boot order is correct, check that the disc is not dirty or scratched. If the disc loads in another computer, check that the optical drive data and power cables are connected.

How would you track down the source of a paper jam?

Check the error message reported by the printer (this may be shown on the printer's console). It may indicate the location of the stuck pages. Otherwise, visually inspect the various feed and output mechanisms.

You are configuring a different workstation with dual-channel memory. You have two modules and there are four slots. How would you determine which slots to use?

Check the vendor's setup/service manual. Many systems will use the slots marked A1 and B1, but it's best not to proceed without consulting the vendor's documentation.

You are writing a knowledge base article for remote sales staff who need to use their smartphones to facilitate Internet connectivity for their laptops from out-of-office locations. What distinguishes the hotspot and tethering means of accomplishing this?

Configuring a hotspot allows the laptop to connect to the smartphone over Wi-Fi. Tethering means connecting the laptop via USB or Bluetooth.

Which types of data might require mapping between fields when syncing between applications?

Contacts and calendar items.

Ticket 1: A user is reporting that they have a dim screen. To solve this, you can adjust the brightness and ____ controls.

Contrast

If print jobs do not appear at the printer and the queue is clear, what could you try first to solve the problem?

Cycle the power on the printer.

Question A non-tech savvy laptop user orders a new hard drive from a large online retailer to install in the laptop. When the drive arrives, the user discovers that it is physically too big to install. What size drive did the user order? A.1.8 in. B.9.5 mm C.7 mm D.3.5 in.

D. 3.5 in.

Question Which of the following central processing unit (CPU) architectures implements a system-on-chip (SoC) where all the controllers, including video, sound, networking, and storage, are part of the CPU? A.IA-32 B.x86 C.x64 D.ARM

D. ARM

Question A user purchased their first smartphone and wants to download useful apps to it. What must the user do before they can use the app store? A.Grant privileges. B.Synchronize between multiple devices. C.Autodiscover. D.Configure an account.

D. Configure an account.

Question A developer wants to ensure that no matter what server an administrator deploys their application on, it has all the libraries and dependencies needed for the application to operate properly. How can the developer accomplish this? A.Client-side virtualization B.Server-side virtualization C.Application virtualization D.Container virtualization

D. Container Virtualization

Question A cloud service provider is taking advantage of software-defined networking (SDN) to allow customers to provision and deprovision cloud resources on-demand. Which layer of SDN does the SDN controller operate on? A.API B.Infrastructure C.Application D.Control

D. Control

A networking student is learning about IP addressing and discovers which of the following facts are NOT true regarding IPv6? A.Divided into two main parts. B.Will replace IPv4. C.Expressed in hexadecimal notation. D.Expressed in dotted decimal notation.

D. Expressed in dotted decimal notation

Question A company hires a network technician who is reviewing the network setup documentation. The technician sees that the company has fiber optic cable running all the way up to the building. This represents what type of connection? A.FTTC B.VDSL C.ONT D.FTTP

D. FTTP

A mobile device user is traveling out of the area and left their device somewhere outside. The user wants to track where they last had their mobile device in order to retrace their steps and find the device. Which of the following options is the system that relies solely on satellite communication to pinpoint a device's location and help the user find their device? A. Geolocation B. Location Service C. Near Field Communication D. Global Positioning System

D. Global Positioning System

Question A network technician is configuring an email connection that will have a permanent connection to the mail server. What kind of email connection is the technician configuring? A.SMTP B.HTML C.POP3 D.IMAP

D. IMAP

When printing to a multifunction printer, the printer staples the pages sideways. What type of error is this? A.Paper jam B.Print quality issue C.Carriage mechanism fault D.Incorrect page orientation

D. Incorrect page orientation

Question A support technician at a corporate office needs to recommend a new laser printer for the administrative office. The office personnel requests a printer that they will not have to refill as often as their current printer. What does the technician need to look for to make the proper decision on which printer to get? A.Output tray capacity B.Pages per minute (PPM) C.Paper handling D.Input tray capacity

D. Input tray capacity

Question A support technician plugged a monitor with a USB C cable connector into a USB C port on the computer, but the monitor would not function. Why would the monitor not work? A.It was not an HDMI cable. B.It was not a DisplayPort cable. C.It was not a Lightning cable. D.It was not a Thunderbolt cable.

D. It was not a Thunderbolt cable.

Question As traffic is overloading an organization's website, the network administrator sets up another web server. What will the administrator configure to distribute traffic between the two servers? A.NAT B.Proxy server C.UTM D.Load balancer

D. Load balancer

Question A network technician is upgrading a grocery store's checkout lines with contactless payment devices. What type of wireless technology are the payment devices based on? A.802.11a B.Bluetooth C.RFID D.NFC

D. NFC

Question A network technician wants all PCs on the network to go to a server to get their boot settings. What boot option in system settings will the technician configure on the PCs? A.Fixed disk B.Optical drive C.USB D.Network/PXE

D. Network/PXE

Question A user returned a new laptop to the helpdesk with complaints that the screen was too dark and that the desktop image they put on it burned into the display. What kind of display does the laptop have? A.Touch screen B.LED C.TFT D.OLED

D. OLED

A network technician is installing a device with an inductor that will copy all the traffic coming through the cable to a monitor port. What type of device is the technician installing? A.SMF B.MMF C.Active TAP D.Passive TAP

D. Passive TAP

Question A printer support technician at a corporate office receives a call from the administrative office that their printer is showing online, but nothing is printing out. When checking the print server, there are multiple documents queued for the printer. What type of error is this? A.Print quality issue B.Garbled print issue C.Printer connectivity issue D.Print spooler issue

D. Print spooler issue

Question A system engineer is configuring fault tolerance with a configuration that uses a logical striped volume with two mirrored arrays. What redundant array of independent disks is the engineer using? A.RAID 0 B.RAID 1 C.RAID 5 D.RAID 10

D. RAID 10

Question A network technician securely connects to a remote server on port 3389. What protocol does the technician use? A.LDAP B.SSH C.Telnet D.RDP

D. RDP

A cloud administrator configures a cloud instance to increase its resources during times of high utilization and decrease its resources when peak utilization times end. What cloud characteristic does this represent? A.HA B.Scalability C.Metered utilization D.Rapid elasticity

D. Rapid Elasticity

Question An energy company needs to protect trade secrets and wants to ensure that none of its PCs are hijacked by malware. Since there are no shared computers in the organization, what can a technician enable to ensure that will not happen? A.TPM B.HSM C.Encryption D.Secure boot

D. Secure boot

Question A manager directs a support technician to plug a device into the communications (COM) port. What port is the manager referring to? A.IDE B.SCSI C.USB D.Serial

D. Serial

A hardware technician is upgrading a device with multiple, identical central processing unit (CPU) packages. What class of computer is the technician most likely upgrading? A.Workstation B.Mobile C.Desktop D.Server

D. Server

Question A security technician is installing a doorbell/video entry system for a customer so that the customer can see and communicate with people who come to their home when they aren't there. What kind of device is the doorbell/video entry system? A.Zigbee B.Hub and control system C.OT D.Smart device

D. Smart device

Question A network technician is upgrading a legacy network for a small business and is replacing their legacy hub with a device that learns MAC addresses and uses them to forward frames to only the destination port, rather than sending them out to every port. What kind of device is the technician replacing the hub with? A.NIC B.Patch panel C.PoE D.Switch

D. Switch

A network technician is purchasing a digital subscriber line (DSL) service for a business that transfers large amounts of data back and forth between branches. What is the best connection type for the business? A.ADSL B.ISP C.PSTN D.Symmetric DSL

D. Symmetric DSL

Question What type of printer uses a heating element to create images on paper? A.Inkjet printer B.Laser printer C.3-D printer D.Thermal printer

D. Thermal Printer

A video production company uses removable media to transport multimedia files to partner and customer sites. Often, the media has to be prepared with only very short notice. In the past, the time taken to transfer files from the development workstations has resulted in delays and missed appointments. To mitigate this issue, the company has procured USB 3.2 Gen 2x2 storage devices and Windows PC workstation expansion cards. The devices and expansion cards support multiple USB hardware port types. Which of the following adapter cables will enable the devices to take full advantage of the highest transfer rate? A.Type A to Type A with USB 3 compatibility (denoted by a blue tab) B.Type B Micro to Type A with USB 3 compatibility (denoted by a blue tab) C.Lightning to Type A D.Type C to Type C

D. Type C to Type C

A hardware technician is purchasing more servers for an organization and needs to ensure the power supply units in the data center have the correct output to support them. What is a power supply unit's output capability measured as? A.Power B.Voltage C.Watts D.Wattage rating

D. Wattage rating

Question A wireless network technician is upgrading the access points in a conference center to provide better Wi-Fi connectivity during conferences. What standard will provide connectivity to the most clients? A.MU-MIMO B.Wi-Fi 5 C.OFDMA D.Wi-Fi 6

D. Wi-Fi 6

Which of the TCP ports listed below is used by Telnet? A.) 20 B.) 21 C.) 22 D.) 23

D.) 23

TCP port 25 is used by: A.) SNMP B.) Telnet C.) FTP D.) SMTP

D.) SMTP

SSH protocol runs on: A.) TCP port 21 B.) UDP port 22 C.) TCP port 20 D.) TCP port 22

D.) TCP port 22

Which interfaces does the adapter cable shown below support?

DVI-D (left) and HDMI.

A user reports that there is a loud clicking noise when she tries to save a file. What should be your first troubleshooting step?

Determine whether a data backup has been made. If not, try to make one.

What type of TXT record uses cryptography to help recipient servers reject spoofed messages and spam?

DomainKeys Identified Mail. (DKIM).

What type of connector is pictured? What are the Rated Voltages? 3.3V__ 5V__ 12V__

EPS 12V 12V

You are explaining your plan to use the 5 GHz band predominantly for an open plan office network. The business owner has heard that this is shorter range, so what are its advantages over the 2.4 GHz band?

Each numbered channel in a 2.4 GHz network is only 5 MHz wide, while Wi-Fi requires about 20 MHz. Consequently, there is not much space for separate networks, and the chances of overlap are high. Numerous other product types work in the 2.4 GHz band, increasing the risk of interference. Using 5 GHz will present a better opportunity to use channel bonding to increase bandwidth. As an open plan office does not have solid walls or other building features to block signals, the slightly reduced range of 5 GHz signaling should not be a significant drawback.

A firewall filters applications based on their port number. If you want to configure a firewall on a mail sever to allow clients to download email messages, which port(s) might you have to open?

Either TCP port 993 (IMAPS) or 995 (POP3S), depending on the mail access protocol in use (IMAP or POP). These are the default ports for secure connections. Unsecure default ports are TCP port 143 and TCP port 110. Port 25 (SMTP) is used to send mail between servers and not to access messages stored on a server. Port 587 is often used by a client to submit messages for delivery by an SMTP server.

Name three keys commonly used to run a PC's BIOS/UEFI system setup program.

Esc, Del, F1, F2, F10, or F12.

True or false? A memory card reader is needed to attach a thumb a thumb drive to a PC.

False- a thumb or pen drive will plug into a USB port.

True or false? To enable printer sharing via Windows, the print device must be connected to the Windows PC via an Ethernet or Wi-Fi link.

False- any print device can be shared via printer properties. The print device can be connected to the Windows print server over USB, Bluetooth, Ethernet, or Wi-Fi. Other clients connect to the printer via the share, however, so the Windows PC must be kept on to facilitate printing.

True or false? A MAC address identifies the network to which a NIC is attached.

False. A Media Access Control (MAC) address is a unique hardware identifier for an interface port. It does not convey any information about logical network addresses.

True or false? A TPM provides secure removable storage so that encryption keys can be used with different computers.

False. A trusted platform module (TPM) provides secure storage for a single computer as it is an embedded function of the CPU or motherboard chipset. The term hardware security module (HSM) is sometimes used to describe a secure USB thumb drive for storing encryption keys on portable media.

True or false? Only a single network name can be configured on a single access point.

False. Each band can be assigned a different service set identifier (SSID) or network name. Access points also allow the configuration of multiple SSIDs per radio, such as configuring a secure network for known clients and an open network for guests.

True or false? A solid-state drive (SSD) attached to an M.2 port must be using the non-volatile memory host controller interface specification (NVMHCI) or NVM Express (NVMe).

False. M.2. is a physical form factor and can support both SATA and NVMe interfaces

True or false? AAA allows switches and access points to hold directory information so that they can authenticate clients as they connect to the network.

False. One of the purposes of authentication, authorization, and accounting (AAA) is to authenticate clients as they connect to the network, but the directory information and credentials are not stored on or verified by switches and access points. These devices are configured as clients of an AAA server and act only to transit authentication data between the end user device (the supplicant) and the AAA server.

True or False? A top-level domain such as .com represents the top of the DNS hierarchy.

False. The Domain Name System (DNS) uses root servers at the top of the hierarchy. The root is represented by a trailing dot at the end of a fully qualified domain name (FQDN), though this can very commonly be omitted in ordinary usage.

True or false? A SOHO router uses an embedded modem and Ethernet adapter to forward traffic between public and private network segments over a single hardware port.

False. The modem and Ethernet interfaces use separate ports.

True or false? At the Transport layer, connections between hosts to exchange application data are established over a single port number.

False. The server application is identified by one port, but the client must also assign its own port to track the connection.

True or false? A long-range fixed wireless installation operating without a license is always illegal.

False. These installations may use unlicensed spectrum but must not exceed the effective isotropic radiated power (EIRP) defined for the frequency band by regulations.

True or false? Running the fans continually at maximum speed is the best way to prevent overheating.

False. This is likely to damage the fans and draw more dust into the case. It will also cause a lot of excess noise. To prevent overheating, the PC should be setup in a suitable location (away from direct sunlight and other heat sources) and cleaned and maintained on a schedule.

Ticket 10: A user reports that a projector shuts down intermittently while in use. You may want to check the ____.

Fan

One of the PCs has a faulty CPU, and one has a faulty power supply. You can use the CPU from one machine in the other. You have opened the case and taken antistatic precautions. What steps must you perform to access the CPU?

First, you will remove power cables from the motherboard and CPU. Then, you will have to remove the fan and heat-sink assembly, disconnect the fan's power connector, release the pins or screws that attach the assembly to the motherboard, and remove the assembly (a gentle twisting motion may be required if the thermal paste has stuck the heat sink firmly to the CPU).

What type of peripheral port would you expect to find on a current generation smartphone?

For Apple devices, the Lightning port. For Android, it will be USB-C.

Ticket 7: A user reports that their built-in speakers are not working. There may be an issue with the ____ cable.

HDMI

What is a Type 2 hypervisor?

Hypervisor software that must be installed as an application running on a host OS. A Type 1 (or bare metal) hypervisor is installed directly to the host hardware.

What is number 1?

I/O Connections

What is the significance of a PSU's wattage rating when you are designing a custom-build PC?

It determines the CPU model and number and type of memory modules, expansion cards, and storage devices that can be installed. The PSU's wattage rating must be higher than the sum of the power requirements of all the PC's components.

You have been servicing a computer, but when you have finished you find that it will not turn on. There was no power problem before, and you have verified that the computer is connected to a working electrical outlet. What is the most likely explanation?

It is most likely that one or more power connectors have not been reconnected. Check the P1 motherboard connector, a 4-pin CPU connector, and all necessary SATA or Molex device connectors. Also, the cable connecting the power button to a motherboard header could have been disconnected.

What effect does a dirty primary charge roller have on laser printing?

It leaves black stripes on the paper. If the roller does not apply the correct charge evenly to the drum, toner is attracted to the place where the charging failed, creating a black stripe all the way down the page.

How do you configure an autodiscover-enabled email provider on a smartphone?

Just select the provider then enter the email address. If the account is detected, you will be prompted for the password.

What is number 3?

Main PSU Power

A cloud service provides a billing dashboard that reports the uptime, disk usage, and network bandwidth consumption of a virtual machine. What type of cloud characteristics does this demonstrate?

Metered utilization.

What type of standard adapter card might be used to connect internal FRU devices to the motherboard of a laptop?

Mini-PCIe, mSATA, or M.2.

A company has discovered that an employee has been emailing product design documents to her smartphone and then saving files to the smartphone's flash drive. Which technology can be deployed to prevent such policy breaches?

Mobile Application Management (MAM) allows an enterprise to create a protected container as a workspace for corporate apps and data and prevent copying to other storage areas.

What type of connector is pictured? What are the Rated Voltages? 3.3V__ 5V__ 12V__

Molex 5V & 12V

What type of connector is pictured? What are the Rated Voltages? 3.3V__ 5V__ 12V__

Molex KK 5V & 12V

You are configuring a network attached storage (NAS) appliance. What file sharing protocol(s) could you use to allow access to Windows, Linux, and Apple macOS clients?

Most clients should support Server Message Block (SMB). Another option is to configure File Transfer Protocol (FTP).

A probe reports that the Internet connection has RTT latency of 200 ms. What is the likely impact on VoIP call quality?

Most vendors recommend that one-way latency should not exceed 150 ms. Round trip time (RTT) measures two-way latency, so 200 ms is within the recommended 300 ms tolerance. Call quality should not be severely impacted, but if latency is persistently that high, it might be worth investigating the cause.

What types of paper/stationery can dot matrix printers use that laser and inkjet printers cannot?

Multi-part or continuous tractor-fed stationery and carbon copy paper.

You are identifying suitable smartphone models to issue to field sales staff. The models must be able to use digital payments. What type of sensor must the devices have?

Near-field communications (NFC) allow the user to touch the phone to a point-of-sale terminal to authorize payment in conjunction with a wallet app.

What widely supported boot method is missing from the following list? HDD, optical, USB.

Network/PXE (Pre-eXecution Environment)--obtaingin boot information from a specially configured server over the network.

Can 802.11ac achieve higher throughput to a single client by multiplexing the signals from both 2.4 and 5 GHz frequency bands? Why or why not?

No. First, a client can only use one radio at a time and so cannot connect simultaneously to the 2.4 GHz and 5 GHz bands. Secondly, 802.11ac works only at 5 GHz; 802.11ac access points use the 2.4 GHz band to support 802.11b/g/n clients. The 802.11ac standard can increase bandwidth by using multiple input output (MIMO) antenna configurations to allocate more streams, such as 2x2 or 3x3.

Consulting the vendor documentation, you find that this system uses DDR4 error-correcting code (ECC) RDMIMMs. The spares you have are DDR4 ECC UDIMMs. Can they be used for the upgrade?

No. If the vendor documentation specifies registered memory (RDIMMs), you must use RDIMM modules. Unbuffered DIMMs (UDIMMs) will not be compatible even if they are ECC.

A user reports that a "Limited connectivity" desktop notification is displayed on their computer, and they cannot connect to the Internet. Will you need to replace the NIC in the computer?

No. Limited connectivity reported by the OS means that the link has been established, but the host has not been able to contact a DHCP server to obtain a lease for a valid configuration.

You are writing an advisory to identify training requirements for support staff and have included OT networks as one area not currently covered. Another technician thinks you should have written IT. Are they correct?

No. Operational Technology (OT) refers to networks that connect embedded systems in industrial and process automation systems.

A workstation has a multi-socket motherboard but only a single LGA 1150 socket is populated. The installed CPU is a Xeon E3-1220. You have a Xeon E3-1231 CPU in store that also uses the LGA 1150. Should this be used to enable symmetric multiprocessing and upgrade system performance?

No. The CPU models must be identical. If the CPUs are not identical, the system is unlikely to boot. Even if the system boots, it is not likely to operate reliably.

You need to upgrade the system RAM on a PC. The motherboard has two 8 GB modules of DDR3 RAM installed and two free slots. You have two spare 16 GB DDR4 modules in your stores. Can these be used for this upgrade?

No. The DDR generation of the motherboard slot and modules must match. You can only use DDR3 modules.

You need to provision a virtualization workstation to run four guest OSs simultaneously. Each VM requires 2 GB system RAM. Is an 8 GB workstation sufficient to meet this requirement?

No. The host OS and/or hypervisor also requires system memory. If the host also has a 2 GB requirement, you would only be abler to launch three of the VMs simultaneously.

You are auditing your network for the presence of legacy systems. Should you focus exclusively on identifying devices and software whose vendor has gone out of business?

No. While this can be one reason for products becoming unsupported, vendors can also deprecate use of products that they will no longer support by classifying them as end of life (EOL).

You are specifying a computer for use as a software development workstation. This will be required to run multiple virtual machines (VMs). Can any x64-compatible CPU with sufficient clock speed be used?

No. You must verify that the CPU model supports virtualization extensions.

You are setting up a Wi-Fi network. Do you need to configure that BSSID?

No. You need to configure the service set identifier (SSID), unless you want to rely on the default value. The SSID is a name for users to recognize the network by. The basic SSID (BSSID) is the MAC address of the access point's radio. As this is code into the device firmware, it does not need to be configured. Stations use the BSSID to send frames to the access point.

A user reports hearing noises from the hard disk-- does this indicate it is failing and should be replaced?

Not necessarily. Hard disks do make noises, but they are not all indicators of a problem. Question the user to find out what sort of noises are occurring or inspect the system yourself.

You are assisting a user with pairing a smartphone to a Bluetooth headset. What step must the user take to start the process?

On the smartphone, open the Bluetooth page under Settings. This will make the phone discoverable and enable the user to find nearby devices. If the headset is not found automatically, check if there is a button on the headset to make it discoverable.

How many storage devices can be attached to a single SATA port?

One

You use three Windows 10 applications that need to print to a Canon inkjet printer. How many printer drivers must you install?

One. Applications rely on the operating system to mediate access to devices. They do not need their own drivers.

A thermal printer used to create labels for parts bins, kits, and boxes is jammed due to a label coming loose during printing. How should you resolve this problem?

Open the printer and locate the label that came off the backing. Remove the label, and if there is any sticky residue, clean it with isopropyl alcohol (IPA) applied to a swab. Ensure the roll labels is properly loaded and that there are no loose labels that might come loose again.

You received a user complaint about a laptop being extremely hot to the touch. What actions should you take in response to this issue?

Overheating can be a sign that dust and dirt is restricting the necessary airflow within the device, so start by cleaning the ventilation duct with compressed air, and then make sure that the device is getting proper air circulation around the outside of the case, such as by supplying a chiller pad.

What type of connector is pictured? What are the Rated Voltages? 3.3V__ 5V__ 12V__

P1 3.3V & 5V & 12V

What is number 7?

PCIe x1 Slot

What is number 5?

PCIe x16 Slot

You see multiple CAT 5E cables going to the desks and decide to replace the cables. Place the pins in the correct order to crimp the cables. Pin 1, Pin 2, Pin 3, Pin 4, Pin 5, Pin 6, Pin 7, Pin 8 Orange/White, Orange, Brown, Brown/White, Blue, Blue/White, Green, Green/White

Pin 1= Orange/White Pin 2=Orange Pin 3=Green/White Pin 4=Blue Pin 5= Blue/White Pin 6=Green Pin 7=Brown/White Pin 8=Brown

You are planning to install a network of wireless access points with power supplied over data cabling. Each access point requires a 20W power supply. What version of PoE must the switch support to fulfill this requirement?

PoE+ (802.3at) or PoE++/4PPoE (802.3bt).

A laser printer is producing white stripes on the paper. What could be causing this?

Poorly distributed toner or a damaged/worn transfer corona wire. If the secondary corona does not apply a charge evenly across the paper, less toner is attracted from the drum to the part of the sheet where charging failed. Not that if there are repetitive white or black marks (rather than stripes) that do not smudge, the issue is more likely to be dirt or grease on the drum.

Another technician has scribbled some notes about a firewall configuration. The technician has listed only the port numbers 25 and 3389. What is the purpose of the protocols that use these ports by default?

Port TCP/25 is used by the Simple Mail Transfer Protocol (SMTP) to send and receive email messages. Port TCP/3389 is used by Remote Desktop Protocol (RDP) to connect to a computer's graphical shell over the network.

The technician has made a note to check that port 445 is blocked by the firewall. What is the purpose of the protocol that uses this port by default, and why should it be blocked?

Port TCP/445 is used by the Server Message Block (SMB) protocol that implements Windows File/Printer Sharing. SMB is designed for use on local networks only. Allowing access from the Internet would a security risk.

A user reports that the printed output is not up to the usual standards for their printer. You will need to resolve this issue so they can print their report. What is the overall process for troubleshooting this issue?

Print out a test page to see if you can reproduce the problem the user reported. If you see the same problem as reported by the user, identify the print defect, based on the type of printer, to resolve the problem. Document the steps you took to resolve the problem.

What RAID level is shown? Is this RAID level redundant? Is this RAID level fault tolerant?

RAID 0 NO NO

What RAID level is shown? Is this RAID level redundant? Is this RAID level fault tolerant?

RAID 1 YES YES

What RAID level is shown? Is this RAID level redundant? Is this RAID level fault tolerant?

RAID 1+0 YES YES

What is the minimum number of disks required to implement RAID 10, and how much of the disks' total capacity will be available for the volume?

RAID 10 requires at least four disks (two mirrored pairs) and comes with a 50% capacity overhead, so the volume will only be half the total disk capacity.

What RAID level is shown? Is this RAID level redundant? Is this RAID level fault tolerant?

RAID 5 YES YES

If you have a computer with three hard disks, what type of RAID fault-tolerant configuration will make best use of them?

RAID 5 (striping with parity). RAID 0 is not fault tolerant. RAID 1 and RAID 10 require an even number of disks.

What is number 2?

RAM Slot

What must you do before installing a new toner cartridge into a printer?

Remove the packing strips. Many printer brands place plastic tabs or cling-wrap over sensitive components during shipping. The old cartridge should be removed and placed into a sealed bag for recycling.

What basic factor might you look at in selecting a high-performance hard disk drive?

Revolutions per minute (RPM)-the speed at which it spins. The top-performing drives are 15,000 (15K) or 10,000 (10K).

What type of connector is pictured? What are the Rated Voltages? 3.3V__ 5V__ 12V__

SATA 3.3V & 5V & 12V

What is number 6?

SATA Port

To minimize paper costs, a department should use the duplex printing option on a shared printer by default. The print device is already configured with an automatic duplex finishing unit. What additional step should you take to try to ensure duplex printing?

Set duplex mode as the default under Printing Preferences.

Ticket 9: A user reports their new monitor has no display. The previous monitor used VGA, but the new uses HDMI. They likely need to cycle through the ____ options on the monitor.

Source

Users in the marketing department complain that a recently installed printer is not producing accurate color output. What step might resolve the problem?

Switch to a PostScript (PS) driver. This is likely to have better support for accurate color models. You might also suggest running a calibration utility.

POP3 (Post Office Protocol version 3)

TCP 110

IMAP4 (Internet Message Access Protocol, Version 4)

TCP 143

FTP (File Transfer Protocol)

TCP 20 (active mode data), TCP 21 (Control)

SSH (Secure Shell)

TCP 22

Telnet (Telecommunication Network)

TCP 23

What port?: SMTP (Simple Mail Transfer Protocol)

TCP 25

RDP (Remote Desktop Protocol)

TCP 3389

HTTPS (Hypertext Transfer Protocol Secure)

TCP 443

SMB (Server Message Block) & CIFS (Common Internet File System)

TCP 445

HTTP (Hypertext Transfer Protocol)

TCP 80

You are dealing with a support request and think that you have identified the probably cause of the reported problem. What should be your next troubleshooting step?

Test the theory to determine the cause.

What considerations do you have to make when choosing the location of a 3-D printer?

The 3-D print process is sensitive to movement and vibration, so the printer must be located on a firm and stable surface. The process can also be affected by dust and the ambient temperature and humidity (especially variations and drafts). Finally, some printer types are fully exposed, so there is some risk of burns from the high-heat elements. Ideally, the printer should not be accessible to untrained staff.

What feature of DHCP means that it must use UDP at the transport layer?

The Dynamic Host Configuration Protocol (DHCP) uses broadcast addressing, which is not supported by the connection-oriented Transmission Control Protocol (TCP). Consequently, DHCP uses the connectionless User Datagram Protocol (UDP).

You are setting up a printer to use static IPv4 addressing. What type of value is expedited in the default gateway field?

The IPv4 address of the local router interface, entered in dotted decimal format.

What fiber optic connector uses a small form factor design?

The Lucent Connector (LC).

You are advising a company on configuring systems to provide better information about network device status. Why would you recommend the use of both SNMP and syslog?

The Simple Network Management Protocol (SNMP) provides a means for devices to report operational statistics to a management server and to send a trap if a threshold for some critical value is exceeded. Syslog provides a means for devices to send log entries to a remote server. Both of these types of information are required for effective monitoring.

Another technician has scribbled some notes about IPv4 addresses used in various networks associated with support tickets. One of them is assigned to the WAN interface of a SOHO router that requires troubleshooting. Which of these addresses must it be? 52.165.16.254 192.168.100.52 169.254.1.121 172.30.100.32 224.100.100.1

The WAN interface of the router must use an IPv4 address from a valid public range, so 52.165.16.254 is the only one it could be: 172.30.100.32 and 192.168.100.52 are in the class B and class C private ranges, 169.254.1.121 is in the range reserved for APIPA, and 224.100.100.1 is outside the range of valid public addresses (it is part of class D, which is used for a type of addressing called "multicasting").

A user complains that their Bluetooth keyboard, which has worked for the last year, has stopped functioning. What would you suggest is the problem?

The batteries in the keyboard have run down--replace them.

You are reviewing network inventory and come across an undocumented cable reel with "CMP/MMP" marked on the jacket. What installation type is this cable most suitable for?

The cable is plenum cable, rated for use in plenum spaces (building voids used with HVAC systems).

What do the numbers after IP mean? Example: IP67/IPX8 etc.

The first number is 6 for solid rating the second number is for liquids rating X has no value

Several laptops need to be replaced in the next fiscal cycle, but that doesn't begin for several months. You want to improve functionality as much as possible by upgrading or replacing components in some of the laptops that are having problems. Which items are most easily replaced in a laptop?

The fixed drive, system memory (RAM), and plug-in wireless card will be the easiest upgradable components to install. If items need repairing, the battery, touchpad, and the keyboard should be straightforward to replace, if you can obtain compatible parts.

If the laptop can display an image on an external monitor but not on the built-in one, which component do you know is working, and can you definitively say which is faulty?

The graphics adapter is working. The problem must exist either in the cabling to the built-in screen or with a screen component, such as an inverter, backlight, or the display panel itself. Further test will be required to identify with.

You are labeling systems for inventory. What two types of display cabling can be connected to this laptop?

The image shows a 15-pin D-shell type video graphics array (VGA) port and a beveled high-definition multimedia interface (HDMI) port. The port in between them is an RJ45 network port, and the two ports on the right are USB Type A ports.

Which components are provided as part of a laser printer maintenance kit?

The main component is a new fuser assembly. The kit will also usually contain a transfer/secondary charge roller plus paper transport rollers for each tray (pickup rollers and anew separation pad).

You are trying to add a computer to a wireless network but cannot detect the network name. What possible causes should you consider?

The network name is configured as nonbroadcast and must be entered manually, the wireless standard supported by the adapter is not supported by the access point, the station is not in range, or there is some sort of interference.

Paper is repeatedly jamming in an inkjet printer. What could be causing this?

The paper might not be loaded squarely, there might be too much paper loaded into the tray, or the paper is creased or dirty.

Which ports are present on the graphics card shown below?

The port on the left is digital visual interface (DVI). The pattern of pins identifies it specifically as dual link DVI-I, which supports both digital and analog signaling. The port on the right is a DisplayPort interface.

What configuration information does a user need to use a print device connected to the same local network?

The print device's IP address or host name. You might note that vendor utilities can search for a connected device on the local network, so "none" could also be a correct answer.

You are advising a customer about replacing the basic network address translation (NAT) function performed by a SOHO router with a device that can work as a proxy. The customer understands the security advantages of this configuration. What other benefit can it have?

The proxy can be configured to cache data that is commonly requested by multiple clients, reducing bandwidth consumption and speeding up requests.

You need to ensure that a print device receives the same IP address when connecting to the network. What value do you need to configure on the DHCP server to enable a reservation?

The reservation should be configured with the media access control (MAC) address of the print device (plus the IP address to assign).

You are advising another technician about typical DNS configuration. The technician thinks that the name server hosting the 515 support domain resource records on the Internet should be configured as the primary DNS server entry in the IP configuration of local clients. Why is this unlikely to be the case?

The role of a name server is to respond to queries for the resource records of the specific domain(s) that it is responsible for. The role of the DNS server types listed in a client's IP configuration is to resolve requests for records in any valid domain. To do this, the resolver must take on the task of querying multiple name servers on behalf of the client. Mixing these roles on the same server machine is possible in theory, but for performance and security reasons, they are more commonly performed by separate servers.

What readings would you expect to gather with a Wi-Fi analyzer?

The signal strength of different Wi-Fi networks and their channels that are operating within range of the analyzer.

A laptop user is complaining about typing on their new laptop. They claim that the cursor jumps randomly from place to place. What might be the cause of this?

The user could be touching the touchpad while typing, or vibrations could be affecting the touchpad. Update the driver or reduce the sensitivity/disable touch and tap events.

When you are configuring firmware-enforced security, what is the difference between a supervisor password and a user password?

The user password allows the boot sequence to continue, while a supervisor password controls access to the firmware setup program.

A technician provisions a network of virtual machines running web server, scripting environment, and database software for use by programmers working for the sales and marketing department. What type of cloud model has been deployed?

This is a platform as a service (PaaS) model. Infrastructure as a service (IaaS) would only provision the VMs and network without the software. It is not software as a service (SaaS) because the web server and database are unconfigured.

You have another part to label for inventory. What category of adapter card is shown in the exhibit?

This is a sound card. It can be identified by the distinctive 3.5 mm audio jacks for connecting microphones and speakers.

A technician is performing a keyboard replacement and asks for your help. The data cable for the old keyboard will not pull out. How should it be removed?

This type of flat data connector is secured by a latch. Pop the latch up before trying to remove the cable.

True or false? An HTTP application secured using the SSL/TLS protocol should use a different port to unencrypted HTTP.

True. By default, HTTPS uses port TCP/443. It is possible I theory to apply SSL/TLS to port TCP/80, but most browsers would not support this configuration.

True or false? A valid IPv6 configuration does not require a subnet mask.

True. In IPv6, the host ID portion of the address is always the last 64 bits. The network prefix length is used to determine which network a host is on, but a mask is not required.

True or false? Both 4G and 5G cellular can be used for fixed access broadband as well as in mobile devices.

True. These can work as an alternative to wired broadband or as a backup/failover Internet connection type. Many router models now come with a cellular radio. A subscribed identity module (SIM) card from the service provider must also be installed.

True or false? A SOHO router can be configured to provide an IPv4 address configuration to hosts without further administrator attention.

True. This service is implemented by the Dynamic Host Configuration Protocol (DHCP).

You have been asked to perform basic maintenance on an inkjet printer. One of the users noticed that the colors are not printing correctly and that the bottom of some letters are not printing. What would you do?

Try using the printer's built-in cleaning cycle and then replacing the ink cartridge. If these do not work, try using an aftermarket cleaning product. Try using the printer properties sheet to check for print head alignment, color settings, and other settings.

NBNAME (NetBIOS name Service)

UDP 137

NBSESSION (NetBIOS Session Service)

UDP 139

SNMP (Simple Network Management Protocol)

UDP 161 (queries), UDP 162 (traps)

What port?: DNS (Domain Name System)

UDP 53

DHCP (Dynamic Host Configuration Protocol)

UDP 67, UDP 68

Following a power cut, a user reports that their computer will not boot. The message "BCD missing" is shown on the screen. The computer does not store data that needs to be backed up. What is the best first step to try to resolve the issue?

Use a system recovery disk to try to repair the disk drive's boot information.

You are updating a support knowledge base article to help technicians identify port flapping. How can port flapping be identified?

Use the switch configuration interface to observe how long the port remains in an up state. Port flapping means that the port transitions rapidly between up and down states.

Additional memory was installed in a user's system, and now it will not boot. What steps would you take to resolve this job ticket?

Use the vendor's system setup guide to verify that the correct memory type was installed on the system and in the correct configuration (consider whether dual-channel memory was installed in the correct slots). Check that the new memory module is seated properly in its slot. Try swapping memory around in the memory slots.

You have been asked to perform basic maintenance on a printer in the Research and Development area. The dot matrix printer used to create shipping documents seems to be printing lighter than normal, and one of the pins seems to not be connecting near the center of the print head as there are blank areas in some letters and images. What maintenance should you perform?

Using the steps in the printer documentation, replace the ribbon in the printer and clean the print head. If this does not fix the problem, replace the print head.

What is the process for installing memory in a laptop?

Verify that the DDR version of the upgrade module is supported by the motherboard.l Take antistatic precautions. Locate the memory slot, which is usually accessed via a panel on the back cover. Move the connector up to 45deg. and insert the memory card, taking care to align it correctly. Push the card flat again.

A user reports that the Internet is slow. What first step should you take to identify the problem?

Verify the link speed independently of user apps, such as web browsing, to determine if there is a cable or port problem.

A company is ordering custom-built laptops to supply to its field sales staff for use predominantly as presentation devices. The company can specify the type of panel used and has ruled out IPS and OLED on cost grounds. Which of the remaining mainstream display technologies is best suited to the requirement?

Vertical alignment (VA) displays support good viewing angles and high-contrast ratios, which makes them well-suited to displaying slides to an audience. The twisted nematic (TN) type is cheap but does not support wide-angle viewing.

Ticket 2: A user is reporting that their screen is flickering and flashing. To solve this you can check the ____ cable and connector.

Video

Which network configuration technology can be configured on switches to divide a local network into multiple broadcast domain segments?

Virtual LAN (VLAN).

What type of memory technology supports paging?

Virtual RAM or virtual memory. The operating system creates a virtual address space for each process. This address space can use physical system random-access memory (RAM) modules and swap space or paging files stored on fixed disks (hard drives and SSDs). Paging moves data between system RAM and the swap space required.

When users connect to the network, they use a basic hardware terminal to access a desktop hosted on a virtualization server. What type of infrastructure is being deployed?

Virtual desktop infrastructure (VDI).

You are assessing standards compatibility for a Wi-Fi network. Most employees have mobile devices with single-band 2.4 GHz radios. Which Wi-Fi standards work in this band?

Wi-Fi 6 (802.11ax), Wi-Fi 4 (802.11n), and the legacy standards 802.11g and 802.11b.

You have a x8 PCIe storage adapter card-- can you fit this in a x16 slot?

Yes -this is referred to as up-plugging. On some motherboards it may only function as a x1 device though.

A workstation must be provisioned with a 4 Gbps network link. Is it possible to specify a single NIC to meet this requirement?

Yes. On an NIC with 4 gigabit Ethernet ports, the ports can be bonded to establish a 4 Gbps link.

A network consultant is recommending the use of S/FTP to extend a cable segment through a factory. Is this likely to be an appropriate cable choice?

Yes. Shielded/foiled twisted pair (S/FTP) will provide the best protection from the external interference sources likely to be generated by factory machinery.

You are completing a network installation as part of a team. Another group has cabled wall ports to a patch panel. Is any additional infrastructure required?

Yes. The patch panel terminates cabling, but it does not establish any connections between the cable segments. You must install a networking appliance to act as a concentrator and connect the cable segments. On modern networks, this means installing a switch and cabling it to the patch panel ports using RJ45 patch cords.

What should you do if you cannot determine the cause of a problem?

You could consult a colleague, refer to product documentation, or search the web. It might also be appropriate to escalate the problem to more senior support staff.

What must you check when inserting a PGA form factor CPU?

You must check that pin 1 is aligned properly and that the pins on the package are aligned with the holes in the socket. Otherwise, you risk damaging the pins when the locking lever is secured.

Your company has recently closed a foreign branch office, and you are repurposing some PCs that were shipped from the old location. What feature of the PSUs must you check before powering the systems on?

You must check that the voltage selector I set to the correct voltage or, if there is no selector, that the PSU is suitable for the voltage used by the building power circuit.

If you must open the system case to troubleshoot a computer, what should you check before proceeding?

You should check that data on the PC has been backed up. You should always verify that you have a backup before beginning any troubleshooting activities.

You think you have discovered the solution to a problem in a product Knowledge Base, and the solution involves installing a software patch. What should be your next troubleshooting step?

You should identify any negative consequences in applying the software patch, then devise an implementation plan to install the file. You need to schedule the work so as to minimize disruption. You should also make a plan to roll back the installation, should that prove necessary.

You receive a support call from a lecturer. A projector is only displaying a very dim image. Which component should you prioritize for investigation?

You should rule out a simple configuration issue, such as the brightness control being turned all of the way down.

After applying a troubleshooting repair, replacement, or upgrade, what should you do next?

You should test that the fix works and that the system as a whole is functional. You might also implement preventative measures to reduce the risk of the problem occurring again.

The repurposed PC is put into service, but later that day the PCs user contacts you to say that the system has been displaying numerous alerts about high temperature. What do you think might be the cause?

You would need to open the case to investigate the problem. Perhaps when the upgrade was performed, one of the fan power connectors was not attached properly, or there could be a fault in the fan on the PSU.