A+

Class A private

10.0.0.0-10.255.255.255

loopback address

127.0.0.1 creates loopback to host and is used in troubleshooting and testing network protocols on a system aka local host

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?

15 pin connector

SATA pin

15 pin connector for power 7 pin for data

Class B private

172.16 to 172.31

Class C private

192.168

802.11g

2.4 GHz 54 Mbps

802.11b

2.4 GHz 11 Mbps

802.11n (Wi-Fi 4)

2.4 and 5 GHz 150 Mbps / 600 Mbps MIMO

802.11ax (Wi-Fi 6)

2.4, 5, and 6 GHz 9.6 Gbps MU MIMO

RDP Port

3389

802.11ac (Wi-Fi 5)

5 GHz 3 Gbps MU MIMO

802.11a

5 GHz 54 Mbps

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?

802.11n

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 and AAAA

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?

ARM

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?

ATX

Embedded System

An embedded system is an electronic device that performs a specific, dedicated function. Embedded systems might typically have operated within a closed network.

Industrial Control System ICS

An industrial control system (ICS) provides mechanisms for workflow and process automation. An ICS controls machinery used in critical infrastructures, such as power and water suppliers.

A technician is upgrading the system firmware on a PC. Which of the following is the technician upgrading? (Select all that apply.)

BIOS and UEFI

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.)

Clean it, thermal past, wear ESD

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?

Client-side virtualization is the most appropriate environment. As the guest OS will contain malware, it cannot infect the technician's computer or network without misconfiguration of the host.

SATA pin connector

Connecting internal storage drives within desktop without powering drive. 7 pins

container virtualization

Container virtualization enforces resource separation at the OS level and includes the variables and libraries required by the application process in the container.

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?

Controller failure.

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.)

DIMM and SODIMM

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?

DVI

ECC RAM

Error correcting code that finds and corrects errors

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.)

Establish the scope of the issue. Check the configuration of patch cords. Check the VLAN configuration.

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.)

Extra processor chip and 72 bit data bus.

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?

FTTP Fiber to the Premises

A technician must determine why a computer is overheating. Which of the following may be the cause? (Select all that apply.)

Fan is not working Room too warm

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?

Fans. Heat sinks are passive cooling.

40.0% complete Question 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?

GPS

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?

GSM

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?

GSM has SIM.

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?

Gigabit Ethernet

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?

Heat sinks

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?

IP67 IP Solids | Liquids

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)

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

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?

If a switch does not support PoE, the administrator can use a device called a "power injector." The administrator connects one port on the injector to the switch port and the other port to the device.

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?

In an organic light-emitting diode (OLED) display, or technically an advanced matrix OLED (AMOLED), the panel does not require a separate backlight but the screen is darker and images burn into the screen easier.

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?

In plane switching 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 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?

In software defined networking, the SDN controller operates on the control layer between the application layer and the infrastructure layer.

IDE

Integrated drive electronics; principle mass storage interface for desktop PCs and is aka PATA

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?

It connects the hard disk

Which connector has 4 Pins?

Legacy storage devices connect PSU via Molex

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?

Modular. The hardware technician is installing a modular PSU which has detachable power connector cables that allow the technician to reduce the number of cables to the minimum required.

PCI and PCIe

PCI card cannot fit into PCIe slot

A support technician needs to install a legacy peripheral component interconnect (PCI) sound card. Which of the following statements about PCI is NOT true?

PCI is software compatible with PCIe.

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?

PaaS

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?

Pin 1 has a red stripe

802.3 af

PoE oldest version, least amount of power drawn 13W

RAID 0

RAID 0 requires at least two disks and provides no redundancy at all. If any physical disk in the array fails, the whole logical volume will fail.

RAID 1

RAID 1 is a mirrored drive configuration using two disks. Each write operation duplicates on the second disk in the set, introducing a small performance overhead.

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?

RAID 10.

RAID 5

RAID 5 uses striping (like RAID 0) but with distributed parity. Distributed parity means that error correction information spreads across all the disks in the array.

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?

SCADA The company is upgrading to a supervisory control and data acquisition (SCADA) system which takes the place of a control server in large-scale, multiple-site ICSs.

software defined networking

SDN way of virtualizing network hardware

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?

SDRAM. The technician removed synchronous DRAM (SDRAM) which is known as that because its speed synchronizes with the motherboard system clock.

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?

SSD. Solid-state drives (SSDs) use flash chips that are susceptible to a type of degradation over the course of many write operations which would cause the laptop to be sluggish and freeze.

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?

Secure boot

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?

Symmetric versions of DSL offer the same uplink and downlink speeds and are of more use to businesses and for branch office links, where more data passes upstream than with normal internet use.

RAID 10

The engineer is configuring RAID 10 which is a nested RAID configuration that combines a logical striped volume (RAID 0) configured with two mirrored arrays (RAID 1).

ECC

The motherboard and CPU must support ECC operation for ECC RAM to be utilized in a system. If the motherboard does not support it, the RAM will not work. Most ECC RAm is RDIMM (registered). MB is either RDIMM or UDIMM. Not both. ECC UDMM will not work with non-ECC UDIMM

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?

The network access point (NAP) or network access server (NAS) are appliances, such as switches, access points, and VPN gateways. These do not store authentication credentials but simply act as a transit to forward this data between the AAA server and the supplicant.

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?

The technician is implementing the trusted platform module (TPM) which, during the boot process, compares hashes of key system state data to ensure they have not been tampered with.

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?

The technician is installing a passive test access point (TAP) which is a box with ports for incoming and outgoing network cabling that physically copies the signal from the cabling to a monitor port.

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?

The technician will configure the network/preboot execution environment (PXE) setting which uses the network adapter to obtain boot settings from a specially configured server.

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?

The technician will suspect the problem is with the GPT as this is a modern boot scheme where the boot information is not on a single sector but still identifies partitions and OS boot loaders.

TPM

Trusted Platform module. specification for hardware-based storage of digital certificates, cryptographic keys, and hashed passwords.

power injector

Used when an existing switch does not support PoE. When a device is connected to a port on a PoE switch, the switch goes through a detection phase to determine whether the device is PoE-enabled. If not, it does not supply power over the port and therefore does not damage non-PoE devices. If so, it determines the device's power consumption and sets the supply voltage level appropriately.

A network technician gathers requirements to implement virtualization. Which of the following resource requirements will the technician need to employ? (Select all that apply.)

Virtualization support enabled on CPU Memory above what OS requires Virtual network environment

A technician started a PC and, when the vendor's logo came up, pressed the F10 key. What is the technician doing?

accessing system setup program

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?

adapter

802.at (PoE+)

allows power devices to draw up to 25W

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.)

alternate DNS and gateway

ADSL

asymmetrical DSL provides fast downlink but slow uplink

APIPA

automatic private IP addresses used when device does not have static IP address or cannot reach DHCP server 169.254.x.x

COM port

communications port; serial port (Recommended standard 232)

modular PSU

detachable power connector cables that allow tech to reduce number of cables to minimum required

HSM

hardware security module. A hardware security module (HSM) is a secure USB key or thumb drive used to store cryptographic material where a user must authenticate before they can access the keys stored on the module.

A user states that a mobile phone does not hold a very good charge. What might the cause be? (Select all that apply.)

improper battery charging Lack of power management Aging battery

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?

infrastructure mode

Which of the following statements regarding most connectors and ports is NOT true?

internal connection points

IMAP

mail retrieval protocol that supports permanent connections to server and connects multiple clients to same mailbox simultaneously

NAP

network address point; appliances that do no store AAA but act as transit to forward data

hub

number of different ports between 4 and 48

ONT

optical network terminal. terminates fiber connection translates from light to electric

network interface card

provides ethernet connection to network

SMTP

secure mail transfer protocol discovers IP address of recipient SMTP server by using domain name part of email address

A manager directs a support technician to plug a device into the communications (COM) port. What port is the manager referring to?

serial port

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?

side panel

SCADA

supervisory control and data acquisition

802.3bt (PoE++)

supplies power up to 51W (3) or 73W (4)

Symmetric DSL

symmetric versions of DSL offer same uplink and downlink

DSL

translates coax cable signal into phone lines

cable modem

translates coax cable signal into radio frequency waves

SCSI

used to connect hard disk drives legacy parallel bus where one SCSI host bus adapter can control multiple devices attached by internal ribbon cables or external SCSI cables

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?

wattage rating