Core 1 (220-1001) Post-Assessment Quiz - [PC Hardware Concepts]
John has just installed a new game on his computer. He has two hard drives and wants to store the data files for the game on the second hard drive. When he tries to save the data, he hears a loud clicking noise, and now the hard drive does not appear in File Explorer. What might be the problem with John's computer?
Hard Drive (The loud clicking sound and the fact that the hard drive is no longer shown in File Explorer indicates that the hard drive failed, and because the OS is on another hard drive, it is still functioning so that File Explorer can indicate the source of the problem.)
How does your mobile provider identify your specific physical mobile device?
IMEI (IMEI (international mobile station equipment identifier) is a unique identifier that allows the mobile provider to identify your specific physical mobile device.)
Your organization is utilizing a private cloud model for company-specific sensitive computing and storage as well as nonsensitive cloud services. At the end of each month, the company experiences short-term spikes in a demand for services while running reports, creating an issue of availability of service to all users. Which of the following is the best option to relieve the issues during these periods of spikes while maintaining the security of company-specific sensitive services?
Implement a hybrid cloud model and move nonsensitive services to the public-based cloud during the periods of spikes. (A hybrid cloud model combines public and private cloud services in a way that data and applications can be seamlessly moved between the two services. During periods of high usage, nonsensitive services can be pushed to the public cloud, allowing cloud resources typically used by these services to be available to company-specific sensitive services.)
A user is complaining of vertical streaking on the printed copies from the department's laser printer. Which of the following is the most likely cause for this print quality issue?
The toner cartridge needs to be cleaned or replaced. (The developer unit is most likely failing or dirty. On most laser printers, the developer unit is built into the toner cartridge.)
Derek has asked you to install a new Wi-Fi card in a laptop. You must disconnect and reconnect two wires, a black wire and a white wire, which are the antennas for the Wi-Fi card. Where do these cables run inside the laptop?
Inside the screen bezel (The antennas run inside the laptop case around the screen. This area is called the screen bezel. When removing the screen, be careful not to damage these wires.)
Which of the following describes a network adapter?
Creates the signals that are sent along the networking medium. (A network adapter or network interface card (NIC) creates the electrical signals, optical signals, or radio signals sent on the network medium. The network medium can be copper (electrical signals), fiber (optical signals), or air (radio signals).)
You are assisting a fellow technician in a situation in which the client states a Windows 10 computer is experiencing limited connectivity messages when accessing the company's WLAN. Which of the following steps will you advise the technician to perform first?
Determine the scope of the problem and document symptoms. (The best step to take next is to determine if just one station is experiencing the problem or if everyone attempting to connect to the WAP is having the same problem.)
Which step in the laser printer process is responsible for changing the charge on the image drum to match the page image?
Exposing (The exposing step is responsible for writing the image on the drum. The laser strikes the drum to reproduce the image by changing the charge on the surface of the drum. The toner will be attracted to the drum, during the developing step, in the places where the laser strikes the drum.)
A Windows 10 user needs a way of connecting to the Internet in the event her primary DSL connection should fail. The user installed a dial-up modem and connected it to an analog POTS line. However, when the user attempts to connect to the Internet, Windows prompts her for a phone number, user name, and password. What does the user need to do to complete the setup and connect to the Internet?
Obtain a phone number and account information from an ISP that supports dial-up. (The user needs to contact an ISP that supports dial-up service, and the ISP will supply the phone number to use for connection as well as the account information.)
A company's research department utilizes 3D printing to create prototypes for manufacturing to test before they begin production. While ordering printer consumables for all the company's printers, the purchasing rep is asking you what type of supplies are needed for the 3D printers in research. What supplies will you suggest?
Plastic filament (3D printers use a plastic filament to build a 3D model of a digital image. The filament is heated and layered, layer upon layer, until a complete representation of the original image is produced. The filament is consumed (used up) during the printing process and must be replenished.)
Jeff owns a health-care company and has hired you to find the best way for his employees to handle email with sensitive health-care information. Jeff wants a way to verify the sender of the digital data. He also wants his employees to be able to connect to email via their company smartphones. What email protocol will you recommend to Jeff?
S/MIME (S/MINE (secure/multipurpose Internet mail extensions) is a widely accepted method for sending digitally signed and encrypted messages.)
Richard recently contacted you because his mobile business needs a way for his customers to pay with a credit card. Which statement is true about how Richard can allow his customers to pay with a credit card?
The best option for Richard to use his smartphone with a cellular data connection and a credit card reader for the credit card transaction. (Smartphones can secure data transmissions over a cellular network. A credit card reader such as the Square Card Reader and app can handle reading the card and the financial transaction.)
When would you want to boot a computer into VGA mode?
Video card drivers are missing or corrupt. (VGA mode allows you to boot to Windows with minimal video drivers loaded. While in VGA mode, you can solve a problem caused by a bad video driver update, or an OS update and the driver is not compatible.)
Which of the following cloud computing services was designed to provide developers with everything they need to build, run, manage, and test an application?
PaaS (With PaaS (platform as a service), developers have everything they need for application development and deployment without the complex infrastructure typically associated with application development.)
When shutting down your computer yesterday, you received a notice that you had a pending update, so you allowed the computer to update before shutting down. This morning when you turned your computer on, you received the error message, "OS not found." What is the first thing you should check or do when you receive this error message?
SATA cable (The rule is to check the simplest thing first and make sure the SATA cable is connected properly. The other option is to remove the hard drive and take it to another computer to see whether the hard drive is working.)
Kaylen has been working on his computer and notices that the screen seems to be flickering. The monitor is not turning on and off, and the monitor indicator light stays on. The monitor does not turn off when the screen flickers. What is the most likely source of the problem?
Video cable is loose. (The loose connection is interrupting the data from the video card to the monitor, which can cause a flicker on the monitor.)
Which of the following network technologies provide Internet service and operate over copper telephone cabling? (Select THREE.)
1. ADSL 2. ISDN 3. Dial-up (1. All "flavors" of DSL can operate over copper POTS (plain old telephone system) lines, including ADSL (Asymmetric DSL), SDSL (Symmetric DSL), and VDSL (very-high-bit-rate DSL). 2. ISDN (Integrated Services Digital Network) uses dial-up phone lines for connectivity and has been replaced with newer technologies due to its lower data rates (up to 128 Kbps). 3. Dial-up Internet is available anywhere copper telephone (POTS) lines are available. Dial-up speeds of up to 56 Kbps are possible.)
Brad is trying to determine whether the video doorbell he would like to purchase is an IoT device. What will the video doorbell require for it to be considered an IoT device? (Select all that apply.)
1. App to control the device 2. IP address on the network (1. An IoT device will need an app or device to establish a connection to with the device over the Internet. The app for a video doorbell will allow Brad to see the video stream and will inform him when someone rings the doorbell. 2. Brad will need to be able to receive an IP address on his network (usually wireless network).)
Which of the following are the most distinctive disadvantages of implementing satellite for Internet connections? (Select TWO.)
1. Requirement for line-of-sight connectivity 2. High latency times for transmission (1. One potential disadvantage is the requirement that satellites have an unobstructed view of the sky. Mountains, trees, buildings, and other tall obstructions can limit or eliminate the possibility of installing a satellite dish. 2. Latency is an inherent element of satellite communications. Latency can be described as delays in transmission and reception of messages. Satellite messages must be sent to a satellite orbiting the Earth and then back.)
You have decided that you want to install a new SSD hard drive. What are the various types of SSD hard drives that you can install on your computer? Select all that apply.
1. SATA connection type 2. NVME type 3. M.2 type (1. SATA is a port on the motherboard that you use to connect a hard drive to the motherboard. You can connect an SSD HDD using SATA. 2. You can connect using an NMVE type SSD HDD. This type will connect via a PCIe expansion bus as an expansion card or a U.2 slot connection. 3. The M.2 card is a type of SSD HDD that looks like a card and is connected to the motherboard. You need an M.2 slot on the computer to install the M.2 card.)
You are configuring a printer on the network with a static IP address. The network administrator instructed you to use the last assignable IP address in the company's subnet for the printer. What IP address and subnet mask will you assign to the printer if the company is using the 172.16.100.0/24 subnet?
172.16.100.254 255.255.255.0 (This answer assumes a subnet mask of /24, which designates a dotted-decimal value of 255.255.255.0 for the subnet mask. Using the /24 subnet mask, the network ID is 172.16.100, and the IP address 172.16.100.255 is the broadcast address. Valid assignable IP addresses are 172.16.100.0 through 172.16.100.254.)
Which of the following wireless networking standards provides the best performance at the farthest edge of its reach?
802.11ac (802.11ac provides an outdoor reach of up to 250 meters and maintains high performance at the farthest edge of its reach.)
Which of the following IPv4 configuration methods will most likely result in a workstation having an IP address of 169.254.254.254/16?
APIPA (An Automatic Private Internet Protocol Address (APIPA) is automatically assigned by a host when the host is configured to obtain an IP address automatically but cannot communicate with a DHCP server. The range of addresses used by APIPA are 169.254.0.0/16 through 169.254.255.255/16.)
Eric is working on a project for work when he receives a message that he needs to restart his computer for an update. Eric plugs in a USB device and saves his data and restarts his computer. During the restart, he receives the message, "non-system or boot error." What might be the problem with Eric's computer?
Boot sequence is set up to boot to a USB first. (If the boot sequence is set up to boot to the USB device and the USB device is not bootable, Eric will receive a "non-system or disk error" because the boot sequence is trying to boot to the wrong device. Eric can change this setting by going to the boot priority in BIOS/UEFI and changing the setting to boot to the hard drive first.)
A technician has been dispatched to resolve an issue with a network-attached printer that will not print from any network device. The technician has power cycled the printer, and the printer control panel indicates the printer's status is "Error 51." Which of the following is the next step the technician should take to troubleshoot the printer?
Check the printer documentation for the error code. (The printer was powered off and back on, and the error code remains on the display. The next step is to research the error code and follow the instructions in the documentation.)
A customer recently installed a high-speed network printer that utilizes an HDD for print spooling and is concerned with the security of the data on the HDD. Which of the following would be the best option to mitigate this concern?
Disable print spooling to the printer's hard disk drive. (Disabling print spooling will prevent data from saving to the HDD. While this will provide a means to protect the spooled data from unauthorized access, print spooling is designed to speed the process of printing to a printer. The trade-off is slower print processing for higher security.)
Ben completed troubleshooting a client's computer. Ben verified that the computer was functioning properly and reloaded all the data from the backup he had performed. What step should Ben complete next?
Document his findings. (The sixth and final step in the best practice methodologies for resolving problems is to document the findings and then return the computer to the user. Documentation of the findings can be used for billing purposes or, in an enterprise environment, to show a supervisor that work was completed on a computer and that the help desk ticket can be closed.)
Michael was troubleshooting his computer and, using a power supply tester, determined that his power supply was not working properly. He has ordered a new one and expects it to arrive within two days. What step is Michael using in the troubleshooting process?
Establish a plan of action to resolve the problem and implement the solution. (Michael established a plan to resolve the problem. He ordered a new power supply and is waiting for it to arrive.)
George is hired by a client to build a new computer. After researching the parts and verifying that they are compatible George orders the parts. After all the parts arrive, George builds the computer. When he completes the build, George turns the computer on to test the system and make sure he installed and configured everything properly. The computer passes POST without an issue. George decides that the next step is to install Windows 10 on the system. During the installation, he receives several errors. After he researches the errors, he discovers that the motherboard is not compatible with Windows 10. What should George try first to fix the problem with the motherboard?
Flash the UEFI/BIOS. (Flashing the UEFI/BIOS will put the most recent firmware update on the motherboard.)
Bryson sees a strange image on his desktop monitor. The image appears like it has been torn or moved horizontally on the screen. What might cause this kind of mage on Bryson's monitor?
GPU on video card overheating. (An artifact happens when the video feed from the video controller gets out of sync with the refresh rate of the monitor screen. A common cause of this problem occurs when the GPU on the video card is overheating.)
Justin has just purchased a new Android smartphone. He was told that to use the phone he would be required to set up an account. What kind of account will Justin be required to set up?
Google (For an Android phone, Justin must set up a Gmail account. All Android phones require a Gmail account so that people can use Google apps on their phones and update their Android devices.)
Brandon returned from a two-week business trip. The first time he turned on his computer, during the boot sequence, he received a POST error stating there was a S.M.A.R.T. error. What does this mean?
Hard drive is failing and will need to be replaced soon. (S.M.A.R.T. errors indicate the drive has met a threshold point of failure. Brandon needs to back up the data and replace the drive as soon as possible.)
Your company has decided to allow employees to receive email from the company email server on their personal smartphones. However, the company also wants the email to be delivered to everyone's computer email client. What email protocol should your company employ?
IMAP (IMAP is an email protocol that can be used to synchronize email between multiple email clients on multiple devices. If does not provide encryption of the email.)
A software developer would like to regularly run tests of an application on Windows 10, Windows 8.x, Windows 7, and Ubuntu Linux. Currently, the developer is installing the application on various users' computers scattered throughout the building. Which of the following would be the best method to allow the developer to easily test the application on multiple operating systems with the least amount of effort?
Install a Type 2 hypervisor on his desktop and then install each OS in a separate VM. (Installing a Type 2 hypervisor on top of his host OS is a good choice. The developer could likely be testing the application on one VM while installing another VM guest operating system. Once all VMs are installed, switching between operating systems is almost instantaneous.)
Several law firms are sharing a database of civil records. The database servers are housed in one firm's data center, as it is the most centrally located firm. What type of cloud deployment is being used for this database?
Internal shared community cloud (A community cloud is a shared cloud computing environment targeted to a limited set of organizations that share similar business requirements, such as security, privacy, performance, and compliance regulations. The scenario describes an internally shared cloud model.)
Yesterday Hunter's laptop screen appeared to go black. The laptop was still running, but he could not see the desktop or any graphics. Hunter connected the system to a desktop monitor, and the laptop screen appeared on the external monitor. Hunter can see a very dim version on the desktop screen. What should Hunter first replace on the laptop to fix his screen?
Inverter (The inverter is used to convert DC to AC power. If the inverter fails, the backlight will not light behind the pixels, causing a very dim to almost black image on the screen.)
Jessica recently started looking to upgrade her computer and has decided that she wants to use her current motherboard and purchase new RAM for her computer. She has done all the research and has determined that her motherboard can hold 16GB of RAM and has four slots. She has two DDR3 DIMM modules that are labeled 1600 MHz. When she goes to the website to purchase two more RAM modules, she does not find 1600 MHz modules, only PC ratings for modules. What RAM should Jessica purchase so that she can use a quad channel on her motherboard?
PC3 12800 (PC3 12800 is DDR 3 that runs at 1600 MHz and will allow for a quad channel.)
Your customer is having a problem with his cellular device. He read that he should disable roaming on the phone to save money. Now he is going out of town and will need to enable roaming. After you enable roaming for him, you will need to update information about radio bands, sub bands, and service providers' IDs. What kind of cellular update contains information about radio bands, sub bands, and service providers' IDs?
PRL update (A PRL (preferred roaming list) update contains information about radio bands, sub bands, and service provider IDs.)
You received a call from a cashier at a retail store who cannot get a receipt to print for a waiting customer. While interviewing the cashier, you determine that the receipt printer acts like it is printing and then ejects the receipt. However, no print is showing. The cashier mentions she replaced the paper roll just prior to the current transaction. Which of the following should be checked first?
Paper is installed incorrectly. (The printer printed properly until the user replaced the paper. The first thing to check is whether the paper was installed incorrectly (upside down). Thermal printers use a special roll paper that is treated on one side only. If the paper is upside down, the print will be blank.)
Your company has won the bid to install cabling in a new office building. You are running a twisted pair cable in a ceiling cavity that is capable of Gigabit Ethernet speeds. Which of the following cables are you installing?
Plenum-rated Cat5e (Cat5e cabling can transfer data at 1 Gbps, and plenum-rated cabling can be used in ceiling cavities.)
You are in the middle of restarting your computer when the power goes out in the building. When the power is restored, your computer will not restart. When you push the button to turn on the computer, nothing happens. You do not have video on your monitor, but the monitor will turn on. You also notice that you don't hear fans spinning and no indicator lights show on your computer. The monitor is on the same power strip as your computer. What might be the problem?
Power supply has been damaged. (This can happen with a sudden loss or surge of power. The lack of lights and fans spinning on your computer indicate that the power supply has been damaged and will need to be replaced.)
Your company has decided it wants to build a file server and store data that can be shared by coworkers. You were asked to research the type of storage that should be used on the server. Your boss said that he would like to implement RAID on the computer and wants your opinion on the best RAID type for the company. He informed you that the company will need at least 500 TB of storage. He also wants to make sure that if a drive fails, the data can be recovered. In addition, he told you to keep the cost down as much as possible. What will you recommend to your boss?
RAID 5 (RAID 5 stripes data and parity information across three or more drives and uses parity checking, so if one drive fails, the other drives can re-create the data stored on the failed drive by using the parity information. You would not be able to add disks to the array later, but the cost will be lower than for RAID 10.)
Angie needs to move multimedia data from her home computer to a work computer. Her company will not allow her to connect to her OneDrive at work, and she has no access to her network drive at home. What is the best storage device Angie can use to move the data to her home computer and return the data to her work computer?
SSD hard drive (An external SSD hard drive connects to a computer by way of a USB port and is a good storage solution to move large amounts of multimedia data from one computer to another.)
You have been dispatched to resolve an elevated trouble ticket in which a workstation cannot communicate with other hosts on the local network. The status light on the NIC is lit, indicating a wired link is present, and the NIC's activity light is flashing normally. The workstation is configured with a static address. While interviewing the user of the workstation, you discover the problem is evident only for an hour in the morning during which time the sales team is in the office and they are uploading their reports to the company server. Which of the following is the most likely cause for this issue?
The IP address assigned to the workstation conflicts with another host on the network. (Under most circumstances, if two NICs are assigned the same IP address, neither host will be able to communicate on the local network. At the least, both hosts will experience intermittent communication and will receive a message indicating an IP address conflict. In this scenario, the second host is apparently a salesperson's laptop.)
Reggie receives a phone call from a computer user at his company who says that his computer would not turn on this morning. After asking questions, Reggie realizes that the computer seems to turn on because the user can hear fans spinning and the indicator light comes on and flashes during the boot. The Num Lock key is on, but there is no video on the monitor. Reggie also learns that the computer has a new video card. The night before the computer was working fine, according to the user. Reggie tests the video cable and the monitor. When Reggie reattaches the video cable to the video card port, the computer appears to be working. What might be the problem?
Video cable was connected to the wrong video port. (The video was being rendered by the video card, but someone connected the video cable to the integrated video port. This would make it appear as though the computer were booting properly but not allowing a signal on the monitor. When the cable is put on the video card, there will be video on the monitor.)
Which of the following technologies contains a virtual desktop, its own virtual hardware, and acts like a physical computer?
Virtual machine (A virtual machine (VM) contains all the necessary information for a "software" computer to appear to run as a physical computer. In desktop virtualization, the VM contains its own virtual desktop and virtual hardware (such as motherboard, processor, RAM, HDD, NIC, and so forth).)
P4 12V power connector
?
A technician needs to connect to and control a remote computer using remote desktop protocol. Which of the following ports will be used for this remote desktop session?
3389 (Port 3389 is assigned to RDP (Remote Desktop Protocol) and is used by Windows Remote Desktop and Windows Remote Assistance to connect to and control a remote computer using the graphical user interface (GUI).)
A server provides validation for the person signing in to a Windows domain. The server validates that the person is who he says he is by verifying the correct username and password, for example. If this service is not functioning, no one can access network resources. What server performs this service?
Authentication server (An authentication server provides authentication services to users or hosts requesting access to the network by validating they are who they say they are. One form of user credentials is a username and password. Once authenticated, the user can access the resources she has permission to access.)
Heather is complaining that the display on her smartphone is very dim. What should she check first before replacing the screen?
Brightness level (Heather should check the brightness level if the screen on her smartphone is dim.)
You are looking for a new Intel processor, and you want a processor that works fast and has the most memory on the processor. What is the main feature that you should take into consideration when looking for the largest amount of memory on a processor to purchase?
Cache (Cache is a smaller, faster memory, closer to a processor core. Cache holds instructions or data as the processor's ALU processes information.)
A small company would like to begin moving its locally saved word processing documents, financial spreadsheets, and presentations to an off-site location. The data will also need to be available to users from work, home, and while traveling. Which of the following should be considered?
Cloud storage service (A cloud storage service is an Internet-hosted file storage service specifically designed to host data files and makes data available anywhere there is an Internet connection.)
You want to use the motherboard with DDR3 to triple channel the RAM in order to increase performance. When you open your computer, you notice that four RAM slots are available. How can you use the increased performance of triple channel with four slots available?
Install RAM in the three slots with the same color scheme. (You would use the three slots that match in color to utilize the triple channel enhancement. You would not be able to put RAM in the fourth slot.)
Which of the following best describes the purpose of virtualization?
Consolidates multiple OSs onto the same physical hardware. (One of the major reasons for utilizing virtualization is to run multiple virtual machines (VM) concurrently on a single physical machine.)
A technician is testing an unshielded twisted pair patch cable and observes the following output on the testing tool. UTP Cable Test Results 1 - 3 2 - 6 3 - 1 4 - 4 5 - 5 6 - 2 7 - 7 8 - 8 What does the result of this test indicate?
Correctly wired crossover cable. (This cable example is a correctly wired crossover cable with T568A on one end and T568B on the other end. Pins 1 and 3 are crossed, and pins 2 and 6 are crossed.)
Tracy calls you to complain about her computer. Every time she starts working in Excel, her computer turns off. She is trying to complete a new project, and the computer will not continue running. You ask her some questions and decide that you should visit her work area to see the problem for yourself. Tracy is running a space heater next to her computer because her office is always too cold. The computer and the space heater are under the desk. What is the likely problem with Tracy's computer?
Computer is overheating because of the proximity of the space heater. (Sometimes environmental factors will cause a computer to overheat. For example, using a space heater too close to your computer will increase the temperature of the computer, causing it to shut down.)
You want to add a new hard drive to your computer and want the fastest internal connection available for the new hard drive. What kind of cable should you purchase?
SATA (SATA is the current standard used for internal hard drives and optical drives. The current standard is SATA 3 with speeds of 6Gbps.)
A company moved several of its users from physical machines to VMs running in a Type 2 hypervisor in order to extend the life of the physical machines. Immediately after moving to VMs, the users began complaining of pop-up ads and other network security-related issues while browsing the Internet. What is the most likely cause for the increase in security issues?
The VM OS does not have the appropriate security measures applied. (A VM requires the same security measures as a physical machine does, for example, keep the guest OS updated, install and run anti-malware software, and require strong passwords.)
Molly, a support technician, is having difficulty determining which port on the patch panel is connected to the keystone jack in each work area. Unfortunately, the cable installers did not label any of the cable runs. Which of the following network tools will best assist the technician in this situation?
Tone generator and probe (The tone generator and probe are the best options to locate multiple cable runs. The pulsating tone sent by the tone generator can be sensed by the probe as the probe gets closer to the correct cable.)
Micah prefers to use an external USB mouse on his laptop computer. However, while he is typing, he can see the mouse pointer moving erratically on the screen. This symptom continues even when the external mouse is disconnected from the USB port. Which of the following would be the best step in attempting to resolve this erratic pointer movement while allowing Micah the usability of the external mouse and touch pad?
Turn off the touch pad using the appropriate Fn key combination. (The user is most likely brushing against the touch pad while typing. Since the user prefers the external mouse, it is advisable to turn off the touch pad completely. This is most often accomplished by using the designated function (Fn) key combination.)
eSATA (This is a picture of an eSATA port. The eSATA port is used to connect an external hard drive. This port allows the hard drive to connect externally but use the eSATA bus)
What is the name of this integrated port on the back of the computer?
Karen is comparing diverse types of IoT devices, including the wireless network protocol she uses. She is interested in wireless technology that uses the 2.4 GHz band with a range of approximately 20 m. What technology will Karen decide to use?
Zigbee (Zigbee wireless protocol operates at 2.4 GHz or 900 MHz bands and has a range of 20 m. Zigbee is considered faster that Z-Wave.)
A technician has determined that the touch pad on a laptop is failing and must be replaced. Which of the following will be a mandatory tool for the technician to use in repairing the laptop?
ESD strap (The ESD (electrostatic discharge) strap is used to dissipate static electricity between the technician and the computer case or frame. Static electricity can damage chips and components inside a laptop (and desktop) computer. ESD precautions are mandatory when working inside a computer case (after removing all sources of power!).)
Chad, an IT support technician, is configuring three 802.11g WAPs in close proximity to each other to ensure reliable wireless coverage for a customer's building with some overlap of wireless signals between WAPs. What channel configuration should the technician assign to the WAPs?
Each WAP is assigned a different non-overlapping channel. (Because the wireless signals from each WAP will overlap each other, the access points will require non-overlapping channels to operate efficiently. The wireless access points are using the 2.4 GHz frequency meaning there are only three non-overlapping channels: 1, 6, and 11.)
FTP services were recently added to a client's SOHO network in order for the marketing team to copy large files to a storage server. Since the change, the wired and wireless network users are complaining that the training videos they are required to watch are choppy and constantly buffering. The video streaming server and storage server are both hosted on the local network. Which of the following will be the best solution to increase the performance of the video streaming service while maintaining the ability for marketing to copy the large files to the storage server?
Enable QoS (QoS (quality of service) is used to control which applications' traffic have priority on the network. Increasing the priority of video streaming traffic on the network will guarantee video streaming services will have the bandwidth required to minimize choppy and buffering video on both wired and wireless network connections.)
You need to use a map app to find directions; however, the smartphone you are using will not show your current location. What smartphone feature should be enabled so that the app can find your phone's current location?
GPS (GPS stands for global positioning system. GPS uses geosynchronous orbit satellites to triangulate your location.)
Randy's laptop has been plugged in for several days to charge the battery for his long trip. When Randy unplugs the laptop to verify the battery is charged, he notices that the battery is very hot, and the system turns off unexpectedly. He notices a swollen bubble in the plastic on the side of the battery. Of the following, which option would you recommend to Randy?
He should replace the battery. (The battery is damaged and needs to be replaced. Bulging from the battery could indicate that a battery cell has been damaged and could become a fire hazard.)
Your company experiences steep spikes in required storage space at the end of each month when the sales database is tasked with running sales reports. Fortunately, the database service and storage were moved off local servers and are now hosted in the cloud. The company's cloud administrator has configured the hosted service to scale up available storage space automatically when the database needs it. The hosted service can also scale down storage space when the reporting is finished. Which of the following cloud computing features provides scaling of storage?
Rapid elasticity (Rapid elasticity refers to the service provider's ability to scale a service up or down based on a customer's workload without disruption of service.)
Hanna is having a problem with a keyboard key sticking on her laptop and wants you to replace the keyboard. What laptop components are inside the keyboard bezel? (Select all that apply.)
1. Touchpad 2. Keyboard (1. The touchpad is part of the keyboard bezel. It is the portion of the keyboard bezel that is used as a mouse. A touchpad can have mouse buttons, or it can be pressed to simulate mouse buttons. 2. The keyboard is inside the keyboard bezel. The keyboard can be removed and replaced by removing the screws that hold it in and then removing the cable that is connected to the motherboard with a zero-insertion force connector.)
You are replacing an existing DSL modem for a SOHO client who is switching from DSL to cable broadband Internet service. The cable company has terminated the coaxial cable at the modem and tested and verified that the Internet connection is functioning properly. Which of the following will be a part of the configuration of the cable modem?
Connect the cable modem to the SOHO network using an Ethernet cable. (The connection from a DSL or cable modem to the local network will use an Ethernet patch cable with RJ-45 connectors on both ends.)
A client is requesting your assistance in connecting a printer to one of the computers in her shipping department. The printer needs to be accessible to all other network computers in the department, and on visual inspection of the computer and printer, it is obvious the connection must be made using a USB cable. Which of the following is the most likely method of connecting and sharing the printer?
Connect the printer to the computer and share the printer by using the printer's Properties' Sharing tab. (The printer should be connected directly to the computer's USB port and shared on that computer. After the printer is installed and configured as a local printer, sharing can be enabled on the Sharing tab of the printer's Properties dialog box.)
Aidan upgraded to a new video card on his computer. He installed the card and attached the power cable from the power supply. When he turned on the machine for the first time, everything seemed to be working fine. Then his computer started to whine and shut down. What can Aidan do to avoid this problem again?
Install a new power supply with more wattage. (Aidan should check to see whether his system is overdrawing wattage and if that is making the power supply whine. Aidan should have remembered that a video card can use 100 or more watts and then checked his system's power supply to make sure he had enough power to run the new video card.)
A technician received an escalated trouble ticket for a laptop that required the replacement of the internal speakers. When the technician arrived and inspected the laptop, he found that the external plastic covers and keyboard bezel that were removed by the previous technician were scratched, cracked, and not fitting together properly. After interviewing the laptop's user, he determined that the laptop covers were fitting properly prior to the initial disassembly by the previous technician. Which of the following is the most likely reason for this issue?
The previous technician was not careful when prying the plastic case apart. (Laptop covers require great care in the disassembly process to minimize scratching and cracking of the plastic. Patience is needed when removing plastic covers, hinges, and screws. Forcing any of the plastics will likely break or crack the part.)
Jerome is working on a hardware problem with his computer. He has determined that the problem is with either the video card or the HDMI cable connecting the video card to the monitor. Jerome has both an HDMI cable and a video card that he can use to fix the problem. Which one should Jerome try first?
HDMI cable. (Jerome should choose the least invasive approach. Removing the HDMI cable from the monitor and the video card takes less time than removing the video card and does not involve opening the computer.)
A computer running a hosted hypervisor is experiencing sluggish network performance when all of its guest VMs are accessing the network subnet. The host computer is using a single physical NIC, and performance issues are present on the host OS as well as the guest VMs. Which of the following steps will assist in resolving this issue? (Select TWO.)
1. Verify that the host physical NIC supports Gigabit Ethernet. 2. Install additional physical NICs in the host computer. (1. The physical NIC in the host computer is shared between the host and all guest VMs. Verify that the physical NIC supports Gigabit Ethernet. 2. Adding additional physical NICs to the host computer and then assigning virtual machines to different NICs will eliminate the need for all network traffic to run on a single physical network interface.)
A technician is troubleshooting a computer that will not communicate with any hosts on the local network. While performing a visual inspection of the system, the technician notices no lights are lit on the computer's wired NIC." Which of the following are possible steps the technician should take to resolve this issue? (Select TWO.)
1. Verify the NIC is enabled in system BIOS. 2. Verify the NIC is connected to the keystone jack. (1. Disabling the integrated NIC will most likely cause the status LEDs to be disabled as well. 2. With no lights lit on the NIC, it is possible the NIC is not properly connected to the network.)
What types of data can you synchronize to your vehicle? (Select all that apply.)
1. Contacts 2. Music (1. You can synchronize your contacts to your car. The contacts can be used to make hands-free phone calls. 2. You can synchronize your music from your phone to your car. You can also play the music using Bluetooth from your phone through the stereo system of the car.)
Today your boss decided that he would like you to build a server. This server will run all existing hardware servers as virtual servers. You have been asked to provide the hardware specifications for the server. What specific hardware requirements will you recommend for this computer? (Select all that apply.)
1. Multi-core processor 2. Maximum RAM allowed (1. The company will need a multi-core processor to run virtual machines. Because of the load on the processor created by multiple virtual machines, a multi-core processor is used to divide the processor load between each core, allowing the computer to run faster and without a bottleneck. 2. Virtual machines require a large amount of RAM to function properly. When multiple virtual machines run, the RAM is used along with the multi-core processor to handle the large amount of data being processed. More available RAM means that more instructions can be stored, ready for the processor to use.)
You have been asked to research a pay device that your company can connect to a computer to help speed up and give customers alternative ways to pay for merchandise. What peripherals can you add to your computer that will allow the company to receive payments? (Select all.)
1. NFC/tap pay device 2. Magnetic strip reader/chip reader (1. NFC/tap allows a customer to tap the device with a smartphone. Using NFC (near-field communication), a short-range wireless connection between the phone and the device, transmits the payment data. 2. This option allows users to run standard and chipped credit cards. This device, along with an Internet connection, allows the company to receive credit card payments.)
A company executive has asked you to install a wireless access point at the top of a steel beam in the factory. There is no electrical connection at this location, and due to the design of the factory, no electrical outlet can be added. What technology can you implement to supply electric service to the access point? (Select TWO.)
1. PoE injector 2. PoE-capable switch (1. PoE (Power over Ethernet) is a technology that provides electrical power over Ethernet cabling. PoE is especially useful when electrical power is not available at the location of devices, such as IP phones, IP webcams, and wireless access points. A PoE injector adds power to an Ethernet cable. 2. Most higher-end switches come with the option for providing power over Ethernet on some or all ports. When using a PoE-capable switch, the need for a power injector is eliminated.The switch can provide power to the WAP by way of an Ethernet cable.)
Which of the following are most likely to be configured to restrict employee access to non-work-related web content? (Select TWO.)
1. Proxy server 2. UTM appliance (1. A proxy server can perform many functions, including proxy services (acting as an intermediary between client and web server), routing, caching, firewall, web content filter, and many more. 2. A unified threat management appliance can combine multiple security protection services into a single appliance, such as anti-malware and antivirus, web content filtering, routing, IPS, IDS, and firewall are actually services that can be implemented on a single UTM appliance.)
Today when Paul turned on his computer, it did not boot. Instead, it tried to boot to the network using PXE. After Paul rebooted the computer, it tried to boot the network again. Because his computer was not booting properly, Paul went into the UEFI to change the boot order and discovered that the boot order was set to boot to the hard drive first. While in the UEFI, he discovered that his hard drive was not recognized by the UEFI. What might be the problems with Paul's computer? (Select all that apply.)
1. SATA cable for the HDD is bad. 2. Hard drive has failed. (1. The SATA cable could cause this problem. If the cable is not connected properly or has gone bad, the UEFI will not recognize the hard drive. 2. The UEFI might not be able to detect the hard drive if the hard drive has failed.)
Dennis purchased a new Android tablet. He wants to transfer music to the tablet from his PC. He also has a movie and several eBooks that he would like to move to the tablet. How can he connect an Android tablet to synchronize data to a PC? (Select all that apply.)
1. USB cable 2. Bluetooth 3. Wi-Fi (1. Dennis can connect via a USB cable using the charging cable. The cable will connect to the charging port on the tablet, and Dennis will be asked to allow the tablet to connect to the computer. 2. Dennis can connect his Android tablet to his PC with Bluetooth. However, Dennis will need to have a Bluetooth adapter on the PC. 3. Dennis can connect an Android tablet to his PC using Wi-Fi. He might need to install an app that will help set up the connection.)
Scott wants to make sure his current power supply has enough power to run his new system. How will Scott determine whether his current power supply has enough power and will work in his new system? (Select all that apply.)
1. Wattage 2. Form factor 3. Type of processor power 4. Number of connectors needed (1. Wattage requirements need to be 30% higher than the amount expected for the new system. Wattage is the amount of power or total output under maximum load. Exceeding the total wattage needed by 30% ensures that Scott will have enough wattage and will not require the power supply to work at maximum output. 2. Scott will need to check the form factor to make sure it will fit in the new case and will have the correct power connection for the motherboard. The form factor does not determine the amount of power supplied by the power supply. 3. Scott should check to make sure he has the correct processor power and the required rails for his processor. He should check whether the processer uses single rail or multiple rails for power and whether the rail is 12V or 5V. He can find this information online or in the processor's documentation. 4. Scott should check to make sure the correct connectors for all the hardware are in the computer. He should also check whether he has enough for each connector type. For example, he might have two SATA hard drives and a DVD drive, in which case, he will need three SATA power connections.)
A user created a VM on a PC using a desktop virtualization utility. Which of the following best describes the location of the VM's HDD?
Saved to one or more virtual disk files. (The virtual HDD is saved to one or more VHD (virtual hard disk) files and can be located on any HDD, any partition, a network share, and so on.)