IT Essentials v5.0 Chapter 3 Exam Answers

A technician is troubleshooting a PC that will not boot. When the PC is powered on, it emits a series of beeps and indicates that the BIOS settings have changed and need to be reconfigured. The technician reconfigures the BIOS settings, saves them, and the computer boots. Later when the PC is powered off and back on again, the same error message appears, and all the BIOS changes are gone. What should the technician do to fix the problem?

Reseat the RAM.
Replace the motherboard.
Upgrade the BIOS firmware.
Replace the CMOS battery.*

What type of connector would be used to supply power to an PATA optical drive?


What is the best way to apply thermal compound when reseating a CPU?

Put a thick layer of thermal compound over the existing thermal compound before reseating the CPU.
Clean the CPU and the base of the heat sink with isopropyl alcohol before applying the thermal compound.*
Scrape off the old thermal compound on the heat sink with a sharp knife and apply the thermal compound liberally.
Change the base of the heat sink before applying the thermal compound.
Use rubbing alcohol to clean the base of the heat sink before applying thermal compound.

A technician has assembled a new computer and must now configure the BIOS. At which point must a key be pressed to start the BIOS setup program?

after the POST, but before Windows starts to load
during the Windows load process
before the computer is powered on
during the POST*

A technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a video subsystem problem. How does the POST indicate the error?

by issuing a number of beeps*
by flashing the LED on the front of the computer case a number of times
by locking the keyboard
by placing an error message in the BIOS

You are monitoring a new technician who is installing a device driver on a Windows-based PC. The technician asks why the company requires the use of signed drivers. What would be the best response to give?

A signed driver has been approved by the company that created the device driver.
A signed driver has passed the lab test of Microsoft for quality and helps prevent a system from being compromised.*
An unsigned driver can cause files to be fragmented as they are processed.
Signed drivers prevent physical damage to devices.

What is an important step when installing a second PATA hard drive in a computer?

Set the drive ID number with the correct jumper.
Ensure that pin one of the PATA data cable is correctly aligned with the connector.*
Configure the BIOS settings to auto-detect the master drive.
Set the swap file size on the new drive.
All companies making devices for a Windows computer have to have Microsoft sign off on the new driver before it can be added to the operating system.

What number of disks is the required minimum to implement RAID 0?


A technician is assembling a new computer. Which two components are often easier to install before mounting the motherboard in the case? (Choose two.)

sound card
video card

A technician is troubleshooting a computer that has a malfunctioning floppy drive. The technician observes that the floppy drive light remains lit constantly. What should the technician do to repair the problem?

Connect the data cable making sure that the colored stripe on the cable is aligned with pin 1 on the drive and the motherboard.*
Remove the floppy drive via Add/Remove Hardware.
Change the jumper setting to master for the floppy drive.
Replace the floppy drive.

A technician is installing additional memory in a computer. How can the technician guarantee that the memory is correctly aligned?

The label on the memory module should always face the CPU.
The arrows on the memory module should be aligned with the arrows on the motherboard slot.
A notch in the memory module should be aligned with a notch in the memory slot.*
Memory slots are color coded, with one end red and one end blue

What is used to prevent the motherboard from touching metal portions of the computer case?

ZIF sockets
an I/O shield
thermal compound

What is an advantage of using signed drivers?

They never need upgrading.
They are verified to be compatible with the operating system.*
They are guaranteed by the manufacturer to work with any hardware.
They are guaranteed to work with all operating systems.
They are free of errors.

Where is the saved BIOS configuration data stored?

hard drive

Which statement describes the purpose of an I/O connector plate?

It makes the I/O ports of the motherboard available for connection in a variety of computer cases.*
It provides multiple connections for SATA hard drives to connect to the motherboard.
It plugs into the motherboard and expands the number of available slots for adapter cards.
It connects the PCIe adapter slots used for video directly to the CPU for faster processing.

What are two examples of settings that can be changed in the CMOS settings? (Choose two.)

swap file size
boot order*
enabling and disabling devices*
device drivers
drive partition size

A technician discovers that the PS/2 mouse port is not working. The technician has several replacement mouse models available. What input port will the technician use to install the replacement mouse?


What are three important considerations when installing a CPU on a motherboard? (Choose three.)

The CPU heat sink and fan assembly are correctly installed.*
The CPU is correctly aligned and placed in the socket.*
The CMOS EPROM battery is removed prior to installing the CPU.
Antistatic precautions are taken.*
The CPU contacts are first cleaned with isopropyl alcohol.
Maximum insertion force is applied to the load lever so the CPU is locked in place.

A technician has been asked to install a second optical drive in a computer. The technician will need to configure the drive as slave. How can the technician accomplish this desired configuration?

Use jumpers on the drive to configure the drive as slave.*
Use jumpers on the motherboard to configure the drive as slave.
List the drive as slave in the CMOS.
Connect the drive after the twist in the PATA cable.

A technician has just finished assembling a new computer. When the computer is powered up for the first time, the POST discovers a problem. How does the POST indicate the error?

It issues a number of short beeps.*
The LED on the front of the computer case flashes a number of times.
It places an error message in the BIOS.
It locks the keyboard.

What is a function of the BIOS?

enables a computer to connect to a network
provides temporary data storage for the CPU
performs a check on all internal components*
provides graphic capabilities for games and applications


  • Gilson

    number 19 is incorrect
    Use jumpers on the motherboard to configure the drive as slave.*