You disassemble and reassemble a desktop computer. When you first turn it on, you see no lights and hear no sounds. Nothing appears on the monitor screen. What is the most likely cause of the problem. Explain your answer.

After trying multiple times, a coworker is not able to fix 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?

Which type of boot authentication is more secure?

You are looking at the motherboard that contains B370 in the motherboard model name, and the socket appears to be an Intel LGA socket. What socket is the board most likely using?

Windows is displaying an error about incompatible hardware. You enter BIOS/UEFI setup to change the boot priority order so that you can boot the Windows setup DVD to troubleshoot the system. However, when you get to the Boot screen, you find that power-on password.

 Windows is displaying an error about incompatible hardware. You enter BIOS/UEFI setup to change the boot priority order so that you can boot the Windows setup DVD to troubleshoot the system. However, when you get to the Boot screen, you find that power-on password?

Your supervisor has asked you to set up a RAID hard drive array in a tower system, which has a motherboard that uses the B360 chipset. You have installed the required three matching hard drives to hold the array. When you enter BIOS/UEFI to configure the RAID, you cannot find the menus for the RAID configuration. What is the most likely the problem?

A customer asks you over the phone how much it will cost to upgrade memory on her desktop system to 16 GB. She is capable Windows user and to access BIOS/UEFI setup using the user power-on password you set up for her. Which actions can you ask the customer to perform as you direct her over the phone to get the information you need to develop an estimate of the upgrade's cost?

The GeForce GTX 1060 graphics card requires 120 W of power. You plan to install it in a PCIe 3.0 x16 slot. Will you need to also install extra power to the card? If so, how can you do that?

Your boss has purchased a new laptop for business use and has asked you to make sure, the data he plans to store on the laptop is secure. Which of the following security measures are the most important to implement to keep the data secure.

Which of the following might cause you to flash BIOS/UEFI?

Which of the following must be done before you can install the Intel Core i7-7700 processor on the Gigabye GA-H110M-S2 motherboard?

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 message while attempting to use it to create a virtual machine (VM). What is the most likely problem?

A friend has asked you to help him find out if his computer is capable of overclocking. How can you direct him?

 A customer has a system with a Gigabyte B450 Aorus Pro motherboard. He wants to upgrade the processor from the AMD Athlon X4 950 to the AMD Ryzen 7 2700X. Which of the following accurately describes this upgrade?

What new parts will you need to replace a failing processor? Select all that apply.

A motherboard has four DIMM slots; three slots are gray and the fourth is black. What type of memory is this board designed to use?

You have just upgraded memory on a computer from 4 GB to 8 GB by adding one DIMM. When you first turn on the PC, the memory count shows only 4 GB. Which of the following is most likely the source of the problem? What can you do to fix it?

What is a reasonable wattage capacity for a power supply to be used with a system that contains a DVD drive, three hard drives, and a high-end video card?

You upgrade a faulty PCIe video card to a recently released higher-performing card. Now the user complains that Windows 10 hangs a lot and gives errors. Which is the least likely source?

What should you immediately do if you turn on a computer and smell smoke or burning odor?

When you boot up a computer and hear a single beep, but the screen is blank, what can you assume that is the source of the problem?

Someone asks you for help with a computer that hangs at odd times. You turn it on and work for about 15 minutes, and then the computer freezes and powers down. What do you do first?

You own a small computer repair company and a customer comes to you with a laptop that will not boot. After investigating, you discover the hard drive has crashed. What should you do first.

You have repaired a broken LCD panel in a laptop computer. However, when you disassembled the laptop, you bent the hinge on the lid so that it now does not latch solidly. When the customer receives the laptop, he notices the bent hinge and begins shouting at you. What do you do first? Second?

Your friend has a Lenovo IdeaPad N580 laptop, and the hard drive failed. Her uncle has offered to give her a working hard drive he no longer needs, the Toshiba MK8009GAH 80-GB 4200-RPM drive. Will this drive fit this laptop? Why or why not?

You have four 2.5 hard drives on hand and need a replacement drive for the desktop system. The documentation for the motherboard installed in the system says the board has six SATA 3 Gb/s connectors and one IDE connector. Which of the four hard drives will work in the system and yield the best performance.

You are setting up a RAID system in a server designed for optimum fault tolerance, accuracy, and minimal downtime. Which HDD is best for this system, assuming the motherboard support it?

You have two matching HDDs in a system, which you plan to configure as a RAID array to improve performance. Which RAID configuration should you use?

Explain how a DVD manufacturer can advertise that a DVD can hold 4.7 GB, but Explorer reports the DVD capacity as 4,706,074, 624 bytes or 4.38 GB.

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

You install a SATA hard drive and then turn on the computer for the first time. You access BIOS/UEFI setup and see that the drive is not recognized. Which of the following do you do next?

Why do hard drives tend to slow down over time?

Of the following hard drives, which one is fastest?

You install an M.2 SSD card in a M.2 slot on the motherboard. When you boot up the system, you discover the DVD drive no longer works. What are the likely causes of the problems?

Your boss bought a new printer with a USB 3.0 port and it came with a USB 3.0 cable. Your boss asked you. Will the printer work when I connect the printer's USB cable into a USB 2.0 port on my computer?

Your desktop computer has DVI and HDMI video ports. If a DVI monitor does not work on your system and yet you know the monitor is good, what is the best solution?

You plug a new scanner into a USB port on your Windows system. When you first turn on the scanner, what should you expect to see?

You turn on your Windows computer and see the system display POST messages. Then the screen goes blank with no text. Which of the following items could be the source of the problem?

You have just installed a new sound card in the system, and Windows says the card is installed with no errors. When you plug up the speakers and try to play a music CD, you hear no sound. What is the first thing you should do?

You have just installed a new DVD drive and its drivers in Windows 10. The drive will read a CD, but not a DVD. You decide to reinstall the device drivers. What is the first thing you do?

You want to install an SSD in your desktop computer, but the drive is far too narrow to fit snugly into the bays of your computer case. Which of the following do you do?

You have just finished installing a network adapter and booted up the system, installing the drivers. You opened File Explorer on a remote computer and don't see the computer on which you installed the new NIC. What is the first thing you check? The second thing?

As an IT technician, you arrive at a customer's home office to troubleshot problems he's experiencing with his printer. While questioning the customer to get an understanding of his network, you find that he has a new Wi-Fi router that connects wirelessly to a new desktop and two new laptops, in addition to multiple smartphones, tablets, and the network printer. He also has several smart home devices, including security cameras, light switches, door locks, and a thermostat supported by an IOT controller hub. To work on the printer, which type of network will you be interacting with?

Your customer then asks you if it would worth the investment for him to have Ethernet cabling installed to reach each of his workstations, instead of connecting them by Wi-Fi to his network. Specifically, he wants to know if that would speed up communications for the workstations. You examine his router and find that is using 802.11ac Wi-Fi. Would you advise him to upgrade to Ethernet? Why or why not?

You run the ipconfig command on your computer, and it reports an IP address of 169.254.75.10 on the Ethernet interface. Which device assigned this IP address to the interface.

A friend of yours is having trouble getting good Internet service. He says his house is too remote for cable TV -- he doesn't even have a telephone line to his house. He's also really frustrated with satellite service because cloudy skies or storms often disrupt the signal. You ask him what provider he uses for his cell phone. What Internet service will you recommend he look into getting for his home network?

You've just received a call from Human Resources asking for assistance with a problem. One of your company's employees, Renee, has recently undergone extensive surgery and will be homebound for 3-5 months. She plans on working from home and needs a solution to enable frequent and extended access to the company's network's resources. Which WAN technology will you need to configure Renee and which tool will you use to configure it?

While troubleshooting an Internet connection problem for your network, you restarted the modem and then the router. The router is now communicating with the Internet, which you can confirm by observing the blinking light on the router's Wide Area Network (WAN) indicator. However, now your laptop is not communicating with the router. Order the commands below to fix the problem and confirm connectivity.