A+

When is it okay to touch the inside of a computer that is turned on?

When using a multimeter to measure voltage output

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 computer was working fine the night before, according to the user. Next, Reggie tests the video cable and the monitor. Finally, when Reggie reattaches the video cable to the video card port, the computer appears to be working. Can you explain what might have caused this problem?

. The video cable is connected to the wrong video port.

Li, a helpdesk technician, is troubleshooting a system. Based on experience, Li has narrowed down the problem and believes it is related to either the motherboard, processor, or RAM. Which symptoms would have allowed Li to narrow down the problem? Select three.

An error message is displayed while booting The system begins to boot but then powers down.

four-year-old laptop will not boot and presents error messages on-screen. You have verified with the laptop technical support that these error messages indicate the wireless card has failed and needs replacing. What is the first step you should take to prepare for the repair?

Ask if the laptop is still under warranty.

Ana buys a computer from a surplus sale event at a local university. When she boots it up, it asks for a password even before the operating system loads. How can she overcome this problem?

Configure jumpers to clear the BIOS/UEFI settings.

You are troubleshooting a serious issue for a friend because their computer does not boot up properly. What method should be employed to ensure the user's data is protected?

Connect the drive to another computer and copy the data to another storage media.

Alexa is asked to upgrade the memory on a desktop computer. Which component will she replace?

DIMM

Kiera is building a new computer and wants to make sure she has an adequate power supply for all the new components she is purchasing. She will be installing three HDDs, with each using 25 watts. The processor she is using will need 125 watts. The motherboard will use 80 watts. RAM will require 3 watts for each of the four DDR3 DIMM modules. Her video card will need 400 watts to run at the maximum level. She wants to keep the cost as low as possible for the power supply. Which power supply would you recommend?

a. 900W power supply

William has been working on a problem with a computer at his company for several hours and still can't ascertain the problem. The computer will not turn on, and William has tried everything he can think of to fix the computer. He has replaced the power cord, the power supply, and even the power strip the computer is plugged into. William decides that it must be the motherboard and takes the computer to his shop to replace the motherboard on the computer. When he plugs the computer in, it turns on. The problem was not the computer-someone had turned off the switch for the wall outlet that the power strip was plugged into. At which step in the troubleshooting process could William have discovered this problem? (Select all that apply.)

Examine the system and making a best guess Interview the user and up backup data

A system has been having intermittent problems. Miya decides to measure the output voltage of the power supply. The voltage exceeds the expected value by an unreasonable amount. What is the most likely consequence?

Excessive voltage will damage the motherboard.

You recently installed a new RAID controller card in a PCIe expansion slot on your computer. After setting up the controller, you transfer data from the backup you created over to the computer. When you finish the setup, you turn the computer off and return it to its normal location. When you turn the computer on, you immediately receive the error message, "RAID not found." What might be the problem?

Expansion card failed or became unseated.

A system's performance is automatically doubled when you use two microprocessors.

False

Marina is replacing her computer's CD-R optical drive with one that has DVD-RW capabilities. When she reboots the computer after installing the disk, she notices that it does not seem to have the required drivers installed. She checks the manufacturer's website and reads that the optical drive is equipped with its own embedded drivers. Which approach should Marina use to ensure that the drivers are installed?

First, check the SATA power connector, then check the Device Manager for installation errors.

A computer freezes at odd times. At first, you suspected the power supply of overheating, but you h have eliminated overheating and replaced the power supply without solving the problem. What do you do next?

Flash BIOS/UEFI.

You need to fix a system that sometimes hangs during the boot process. In addition, it also hangs at random times after booting successfully. What could be a possible remedy?

Flash the BIOS/UEFI

Which type of boot authentication is more secure?

Full Disk Encryption

Ricky has just purchased a new Android tablet and wants to install an app that allows him to read an eBook. Where will Ricky need to navigate to on his Android tablet to view, purchase, and install the new app?

Google play store

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.)

Leroy buys three identical 2 TB SSDs to implement a fault tolerant RAID configuration. He configures RAID 1 using the three disks, and later discover that the total storage is only 2 TB. What alternative, if any, does Leroy have?

Implement RAID 5

While working on your computer, you receive the POST error, "Drive Not Recognized." You check your SATA cable to see if it is the problem, and it tests fine. You remove the hard drive and test it in a computer system known to be in good working condition and find that the hard drive is working. You can move data and check to make sure the OS files are not corrupt. You use a power supply tester to see if the voltage for the SATA power connection is correct, and the test shows the power is correct. You even check BIOS to make sure the hard drive can be recognized and find that all settings in BIOS are at default, so the system should recognize the hard drive. What might be the problem with your hard drive system?

Motherboard SATA port has gone bad.

You are installing a new hard drive in a system in which the hard drive will run at 6.0Gbps. What can you use to determine whether the SATA port to which you are connecting the drive will also run at 6.0Gbps?

Motherboard manual.

What is the general name of the processor feature that AMD calls HyperTransport?

Multithreading

When you turn on your computer for the day, you notice lights and fans but no beeps and no video. The Num Lock light does not come on. What might be the problem with your computer? (Select all that apply.)

Processor has failed or is not seated properly. RAM is not working properly. Motherboard has failed.

You purchase a new desktop computer that does not have wireless capability, and then you decide that you want to use a wireless connection to the Internet. What are the two least expensive ways to upgrade your system to wireless? (Choose two.)

Purchase a wireless expansion card, and install it in your system. Purchase a USB wireless adapter, and connect it to the computer by way of a USB port.

Your company has decided it wants to build a file server and store data that can be shared by coworkers. Your team was asked to research the type of storage that should be used on the server. The objective is to implement RAID on the computer, and your team must suggest the best RAID type for the company. The desired RAID should have at least 500 TB of storage and be cost-effective. It is also important that if a drive fails, the data can be recovered. One of your team members suggested using RAID 10. What other suggestion can you make to meet all the requirements?

RAID 5 is the best option

You notice that your computer is running slow and decide to reboot the computer to see if that will fix the problem. During the reboot, you notice that the amount of RAM shown during the RAM count is not the same as it was the day before. What might cause this problem?

RAM module has become unseated.

A network technician is on a service call at a remote residential location. He forgot to take some Ethernet cables and needs to make one. What type of connector will he need on both ends of the cable?

RJ-45

Hanna is having a problem with a key sticking on her laptop's keyboard. She began by using technology cleansing wipes, then compressed air, but the key is still sticking. What do you think Hanna should do next?

Replace the keyboard

A software development firm needs to test a high-end application on a system with a family of 64-core AMD processors. Which processor will meet their needs?

Ryzen Threadripper

Bryson sees a strange image on his desktop monitor. The image appears to be a faint impression of his favorite video game landing page. What might cause this kind of image on Bryson's monitor?

Screen burn-in

You want to upgrade your computer's processor but are not sure what brand of processor the current motherboard takes. Since you have taken your computer apart, where do you look on the motherboard to determine what type of processor you should be using?

Socket

Which two statements are true about 4-pin 12 V, 8-pin 12 V, 6-pin PCIe, and 8-pin PCIe connectors?

The 6-pin and 8-pin PCIe connectors provide auxiliary power to video cards. The 4-pin 12 V and 8-pin 12 V connectors provide auxiliary power to the CPU.

Decide which of these statements about SATA and SAS data storage interfaces are true.

The SAS interface is more than three times faster than the SATA interface.

Tomi buys a CPU from a computer store. The retail box references the amount of L1 cache in the list of features. What is it referring to?

The amount of memory residing directly on the processor die

After trying multiple times, a coworker is unable to fit a motherboard in a computer case and is having difficulty aligning screw holes in the motherboard to standoffs on the bottom of the case. Which is most likely the source of the problem?

The form factors of the case and the motherboard don't match.

You are able to successfully install new DIMMs with a data path that have 72 bits in a server using a 64-bit processor. Which of the following is true regarding this scenario?

The system will run as expected with no problems at all

Gina is upgrading your computer with a new processor. She installs the processor into your motherboard and adds the cooling system. She powers up the computer, and it begins to boot but then shuts down. What could be the cause of this problem?

Thermal compound was not used.

Johan is a hard drive performance engineer working at a major storage device manufacturer. He needs to measure, record, and analyze the throughput, IOPS, and the latency of the different models of drives the company produces. What is the difference between these three parameters? Select three.

Throughput is the amount of data flow through a point in the data path in one second. IOPS measures the number of read or write operations performed in one second.

A video card using a PCIe ×16 slot is faster than the video port built-in on the motherboard.

True

Micah prefers to use an external USB mouse on his laptop computer. However, while he is typing, he can see the mouse cursor moving erratically on the screen. This symptom continues even when the external mouse is disconnected from the USB port. Micah wants to resolve this erratic cursor movement while still being able to use the external mouse and touch pad. What change can Micah make as the best next step toward resolving this issue?

Turn off the touch pad using the appropriate Fn key combination.

What two different types of firmware may be used on motherboards?

UEFI/BIOS

Motherboards may contain which three of the following ports on the I/O panel?

USB ports HDMI, DVI, and/or DisplayPort

Jose is about to upgrade the processor in a computer. What should he do first?

Update the firmware on the motherboard if needed.

You suspect your computer is overheating because your system sometimes restarts or turns off by itself. At other times the 32 inch monitor turns blue, and the system remains unresponsive until you manually restart it. What relatively quick measure can you take to try to fix the problem?

Use a can of compressed air to blow out the dust

Your laptop at home is exhibiting intermittent problems and you suspect it could be related to power. How can you verify the power adapter is supplying the proper voltage?

Use a multimeter. Place the red probe of the multimeter in the center of the DC connector and the black probe on the outside cylinder.

After installing the processor and reassembling the computer, the system begins the boot process and suddenly turns off before completing the boot. You turn everything off, unplug the power cord, press the power button to drain the power, and open the case. What should you do next?

Verify the cooler is securely seated and connected

Scott has decided to build a new system. His goal is to update the components that will improve its functionality but wants to save money by reusing components from the old system if possible. Scott wants to make sure his current power supply has adequate power to run his new system. How will Scott determine whether his current power supply has enough power to run the new system? (Select all that apply.)

Wattage Type of processor power

What is the maximum throughput speed of PCI Express Version 6.0 using 16 lanes?

126 GB/sec

Which statement is NOT true regarding Alder Lake chipsets?

Alder Lake processors can have up to 8 cores.

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 deciding on which processor to purchase?

Cache

The port pictured below is located on the back of your computer. What is the name of this integrated port? https://cnow.apps.ng.cengage.com/ilrn/books/an8ap11h/post_test_q38.jpg

Esata

Henry is having a problem with the electrical system on his current laptop. The battery for the laptop will not charge. Henry took the AC adapter and battery from another laptop that is known to work, and put them in his current laptop, but still the battery will not charge. What possible actions can Henry take to make his laptop usable? (Select all that apply.)

Henry can replace the laptop system board. Henry can purchase a new laptop. Henry can use the laptop only when it's connected to the power using the AC adapter.

This morning when Paul turned on his computer at work, it would not boot. Instead, Paul reported that he heard a loud clicking noise coming from inside his computer. What might be the problem with Paul's computer?

Magnetic hard drive failed.

An important element of knowledge for any technician is the makeup of a device. What is a common component of a system case?

Motherboard

Understanding the makeup of a device is extremely important. Keeping your device cool and displacing as much of the heat as possible is important. One of those components, a thermal compound is also commonly referred to as ______.

Thermal paste

You discover Event Viewer has been reporting hard drive errors for about a month. What is the first solution you should try to fix the problem?

Use the chkdsk command to repair the drive.

An experienced user has installed Oracle VM VirtualBox on her workstation and is attempting to use it to create a virtual machine (VM). The software is causing error messages while attempting to create the VM. What is the most likely problem?

Virtualization is not enabled in BIOS/UEFI.

James added a new video card and needs to get a power supply that will have enough power to run the new card. When researching the new power supply, what feature does James need to look for to make sure he has enough power to run his computer with the new video card?

Wattage

Elliott brought his laptop to you to diagnose his 'screen issues.' While interviewing him, Elliott describes an instance where the entire screen displaying weird colors as well as an instance when the screen froze. How should Elliott resolve this issue?

c. Replace the Mini PCIe video card

Michael was troubleshooting his client's computer and determined that the power supply was not working properly. He has ordered a new one and expects it to arrive within two days. What conclusion can you draw as to what Michael discovered in the troubleshooting process?

c. The power supply tester screen didn't light up during testing, indicating the power supply functioned improperly

Tiffani, a hardware technician, has just begun investigating a computer whose owner has reported overheating. What approach should Tiffani use to troubleshoot this issue?

c. Tiffani should first check the function of fans and heat sinks, then check the BIOS fan status and temperature

A company is researching motherboards for a small / compact low-end system they are designing to be used in a home theater system. Which motherboard form factor is the company most likely to use?

mITX

A technician is building a custom gaming computer for a customer. In what order should the technician install the main components?

power supply, drives, motherboard, cards

What is the set of rules and standards that any two entities use for communication?

protocol