1.What unit is used to measure the amount of resistance to the flow of current in a circuit?

  • watts
  • ohms
  • volts
  • amps

Answers Explanation & Hints:

The resistance of a circuit to the flow of current is measured in ohms (O). Amps (A) measure the amount of electrons moving through the circuit. Watts (W) measure the work required to move electrons through the circuit. Volts (V) measure the work required to move a charge from one location to another.

The correct answer is: ohms

2. Which term refers to the technique of increasing the speed of a processor from the specified value of its manufacturer?

  • hyperthreading
  • throttling
  • multitasking
  • overclocking

Answers Explanation & Hints:

Overclocking is a technique that is used to make a processor work at a faster speed than its original specification. Overclocking is not a reliable way to improve computer performance and can result in damage to the CPU.

The correct answer is: overclocking

3. Which device can protect computer equipment from brownouts by providing a consistent quality of electrical power?

  • UPS
  • AC adapter
  • SPS
  • surge suppressor

Answers Explanation & Hints:

The correct answer is: UPS

4. What is a characteristic of thin clients?

  • They perform all processing tasks internally.
  • They require large amounts of fast RAM.
  • They require a network connection to access storage and processor resources.
  • They are able to run multiple operating systems simultaneously.

Answers Explanation & Hints:

A thin client device is typically a type of low-end computer that  does not perform any processing or data storage locally. A thin client relies on a network connection to access any resources required to perform computing tasks and operate software.

The correct answer is: They require a network connection to access storage and processor resources.

5. What are two settings that can be modified in the BIOS setup program. (Choose two.)

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

Answers Explanation & Hints:

The BIOS setup program is used to change settings if memory modules, storage devices, and adaptor cards are added. Most manufacturers provide the ability to modify boot device options, security and power settings, and adjustments for voltage and clock settings.

The correct answers are: enabling and disabling devices, boot order

6. A technician accidentally spills a cleaning solution on the floor of the workshop. Where would the technician find instructions on how to properly clean up and dispose of the product?

  • the local hazardous materials team
  • the regulations provided by the local occupational health and safety administration
  • the insurance policy of the company
  • the safety data sheet

Answers Explanation & Hints:

The Safety Data Sheet (SSD) summarizes information about materials, including hazardous ingredients, fire hazards, and first-aid requirements.

The correct answer is: the safety data sheet

7. Where is the saved BIOS configuration data stored?

  • cache
  • hard drive
  • CMOS
  • RAM

Answers Explanation & Hints:

The BIOS configuration data is saved to a special memory chip called a Complementary Metal Oxide Semiconductor (CMOS).

The correct answer is: CMOS

8. Which specialized computer component would be most important for a workstation built for audio and video editing?

  • a liquid CPU cooling system
  • a high speed wireless adapter
  • a specialized video card
  • a TV tuner card

Answers Explanation & Hints:

Computers designed for audio and video editing will need specialized inputs and outputs for recording and playback equipment. This requires an audio and video card that can handle the variety of inputs and outputs needed.

The correct answer is: a specialized video card

9. When a dual core CPU with Hyper-Threading features is installed on a motherboard, how many instructions can the CPU simultaneously process?

  • 8
  • 2
  • 4
  • 6

Answers Explanation & Hints:

With Hyper-Threading, two pieces of code can be processed simultaneously by a single core.

The correct answer is: 4

10. Which website should a technician consult to find instructions for updating the BIOS on a computer?

  • motherboard manufacturer
  • operating system developer
  • CPU manufacturer
  • case manufacturer

Answers Explanation & Hints:

Go to the motherboard manufacturer site to get the correct software to update the BIOS.

The correct answer is: motherboard manufacturer

11. What indicates that the charge on the CMOS battery could be getting low?

  • Performance while accessing files on the hard drive is slow.
  • A beep error code occurs during POST.
  • The computer time and date are incorrect.
  • The computer fails to boot.

Answers Explanation & Hints:

The computer time and date are held in CMOS. This requires power from a small battery. If the battery is getting low, the system time and date may become incorrect.

The correct answer is: The computer time and date are incorrect.

12. A network administrator is setting up a web server for a small advertising office and is concerned with data availability. The administrator wishes to implement disk fault tolerance using the minimum number of disks required. Which RAID level should the administrator choose?

  • RAID 1
  • RAID 5
  • RAID 0
  • RAID 6

Answers Explanation & Hints:

Both RAID 0 and RAID 1 require at least 2 disks. However, RAID 0 does not provide fault tolerance. The minimum numbers of disks for RAID 5 and RAID 6 are 3 and 4 respectively.

The correct answer is: RAID 1

13. Which definition describes the term “overclocking”?

  • modifying the motherboard clocking crystal to increase the timing signals
  • changing the bus speed of the motherboard to increase the speed of attached adaptors
  • increasing the speed of the CPU beyond the recommendations of the manufacturer
  • replacing slower SDRAM with faster memory

Answers Explanation & Hints:

Increasing the CPU clock speed will make the computer run faster, but also generate more heat and cause overheating issues.

The correct answer is: increasing the speed of the CPU beyond the recommendations of the manufacturer

14. Which hardware upgrade would allow the processor in a gaming PC to provide the optimal gaming performance?

  • a fast EIDE drive
  • large amounts of fast RAM
  • liquid cooling
  • a high capacity external hard drive

Answers Explanation & Hints:

Faster RAM will help the processor to keep all of the data in sync because the data that it needs to calculate can be retrieved when it is needed. The more RAM that the computer has, the less often the computer needs to read from slower storage such as hard drives or SSDs.

The correct answer is: large amounts of fast RAM

IT Essential Quiz 2 Answers: PC Hardware and Software of CISCO NETCAD

IT Essential Quiz 1 Answers: PC Hardware and Software of CISCO NETCAD

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