aries answers unit 2 (hardware)

Aries PC Maintenance and Repair: Hardware V8.0

Preview Exam Unit 2 Master

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Preview Exam Exam Bank: Aries PC Maintenance and Repair: Hardware V8.0 Exam Name: Unit 2 Master # Questions: 40

1. A computer's power supply converts ___________ current to ____________

current.

A. alternating, direct

B. direct, alternating

C. alternating, indirect

D. indirect, alternate

Objective: 6.1 Define a power supply and its function

2. In general, the 3.3V and 5V DC currents supplied by the computer's power

supply are used to power ____________.

A. various fans and system motors

B. the printer

C. the monitor

D. circuitry such as the motherboard, memory, and CPU

Objective: 6.2 Describe power supply fan features

3. To what are the blue lines in the graphic pointing?

A. expansion cards

B. AC/CD converters

C. dust plates

D. capacitors

Objective: 6.3 Distinguish among the features of power supply types

4. Choose the letter sequence that correctly identifies the labeled power supply

components in this order: voltage switch, power on/off switch, power cord

socket, power supply leads

A. A, C, B, D

B. D, B, C, A

C. B, A, C, D

D. A, B, C, D

Objective: 7.1 Identify power supply connectors, sockets, and switches

5. The arrow in the graphic is pointing to a power supply's ___________.

A. small drive connector

B. large drive connector

C. motherboard connector

D. None of these


6. The term "_______" indicates the dimensions and types of features and

design. This applies to a computer's power supply, case, and motherboard.

A. design type

B. size setup

C. form factor

D. component setup


7. The graphic depicts a power supply's ___________.

A. small drive connectors only

B. large drive connectors only

C. small and large drive connectors

D. None of these


8. The arrow in the graphic is pointing to a power supply's

____________________.

A. optional female socket

B. required female socket

C. optional male socket

D. required male socket


9. The arrow is pointing to the power supply's ___________________.

A. voltage switch

B. remote button switch

C. external lever switch

D. None of these


10. When the rocker-type power on/off switch on the back of the computer is

off, which of the following is true?

A. Only DC power is getting to the power supply

B. No AC power is getting to the power supply

C. The power supply, but not other computer components, receives AC power

D. None of these

Objective: 7.2 Describe the function and features of power supply connectors, sockets, and switches

11. Which form factor type has been the dominant form factor for the last 10+

years?

A. ATX

B. NLXF

C. AT

D. Baby AT

E. Slimline


12. Which of the following may be attributed to an insufficient or unstable

power supply?

A. booting lock-up

B. spontaneous re-boots

C. long boot-ups

D. All of these

Objective: 8.2 Identify power supply specifications and their features

13. The range of voltage that a computer's power supply can accept from an AC

power source is called the power supply's________________ specification.

A. frequency

B. current

C. total power

D. operating range


14. Which power supply specification refers to the Hertz (Hz) range within

which a power supply operates?

A. operating range

B. frequency

C. current

D. EMI


15. All electrically powered computer components generate heat. In order to

keep a computer at safe operating temperatures, ___________ are necessary.

A. AC coolers

B. cooling racks

C. cooling fans

D. temperature modulators


16. Which specification identifies the power supply's percentage ratio of input

power to output power?

A. Operating range

B. Efficiency

C. Current

D. EMI


17. To assure that your power supply provides enough power to run every

device on your computer, you need to check the power supply's ________

specification.

A. load regulation

B. line regulation

C. total power

D. output

Objective: 8.1 Explain the importance of power supply specifications

18. Which power supply specification indicates the amps available for each type

of DC voltage?

A. output

B. total power

C. Power_Good Delay

D. operating range


19. What conductive substance is used to promote improved heat conductivity

between the CPU and heat sink?

A. WD40

B. Heat Dissipator

C. Thermal Compound

D. No conductive substance is needed between the CPU and heat sink.


20. Choose the group(s) responsible for assuring power supply compliance with

United States power specification standards.

A. Critical Specifications Association

B. Technical Standards Commission

C. Underwriters Laboratories

D. All of these

Objective: 8.3 Identify agencies responsible for power supply certification

21. A motherboard with the PCI Express interface will require a _______

motherboard power connector.

A. 20 pin

B. P8 & P9

C. 20+4 pin

D. 6 pin PCIe


22. Choose the letter sequence that correctly identifies the outlet components

in this order: neutral wire connection, hot wire connection, safety ground

connection

A. A, B, C

B. A, C, B

C. B, A, C

D. C, A, B

Objective: 9.2 Describe electrostatic discharge

23. A large, unexpected increase in electrical current lasting several seconds is

called a ______________.

A. blackout

B. high oscillation

C. power spike

D. power surge

Objective: 9.1 List and define common external power problems

24. An brief, high-powered electrical impulse that produces a sudden voltage

overload, typically lasting between .5 and 100 microseconds, is called a

______________.

A. harmonic distortion

B. high oscillation

C. power spike

D. power surge


25. When electrical voltage falls 80 percent below normal capacity, you are

experiencing a ___________.

A. power sag

B. power outage

C. shallow oscillation

D. None of these

Objective: 9.1 List and define common external power problems

26. A technician is working on a computer that is giving a display error after

bootup. This started happening after a new high power PCIe gaming video card

was installed. What is the most likely cause of this problem?

A. An extra fan needs to be installed due to the heat given off by the new video card.

B. The CPU is too old to work with the video card.

C. The card requires a lithium ion battery that needs to be installed into the

card.

D. The card requires more power from a 6 pin PCIe power connector.


27. The small power connector that supplies power to devices such as floppy

drives and logic boards is also known as a __________ connector.

A. Molex

B. 4-hole

C. Berg

D. Standard


28. The large power connector that supplies power to devices such as CD and

DVD drives is also known as a ____________ connector.

A. Berg

B. Plus-size

C. Standard

D. Molex


29. High end motherboards used by servers and powerful workstations will

require an ________ power connector in order power a second processor or

dual processor.

A. 8 pin PCIe

B. 8 pin EPS12V

C. 20+4 pin ATX12V v2.0

D. 4 pin P4 ATX12V


30. A ____________ is installed into some PC power supplies to draw power

when no actual device is connected to the power supply. This device allows the

power supply to function during tests when not installed in a computer.

A. multimeter

B. load resistor

C. load stator

D. resistance band


31. The remote computer activation feature of an ATX power supply is called

___________.

A. Remote Power

B. Tele Power

C. Power Go

D. Soft Power


32. Not all of the electrical power delivered to the power supply (from the wall

outlet)is converted into useable electricity. The electricity that is not converted

into power is __________________.

A. sent back to the wall socket

B. stored in the power supply for later use

C. converted into electrons

D. converted into heat


33. What type of computer generated interference can interfere with devices

such as televisions and cordless phones?

A. Radio Fluctuation Interference

B. Electro-Stasis Development

C. Radio Frequency Interference

D. Electro-Static Discharge

Objective: 9.3 Define line noise and explain the problems that this can cause

34. What power event is characterized by a buildup of electrons on a material,

leading to a sudden transfer of those electrons to another material?

A. EMI

B. RFI

C. power surge

D. ESD


35. What is the potential danger when a computer is connected to an

improperly grounded circuit?

A. An electromagnetic discharge may occur

B. A severe electrical shock

C. Too much RFI may be generated

D. Too much EMI may be generated


36. What device protects against power surges?

A. robust hard drive

B. surge protector

C. harmonic dampener

D. Power surges are unstoppable and an unavoidable risk of computing

Objective: 9.3 Define line noise and explain the problems that this can cause

37. A customer that runs a radio station is complaining of intermittent page not

found errors when using the Internet, and occasional problems sending and

receiving data across the network. Which of the following could be causing a

problem?

A. ESD

B. RMI

C. EMI

D. RFI

E. ABS


38. What is the most likely problem that causes a CPU fan to make noise?

A. Faulty thermostat

B. Bad power supply

C. Worn ball bearings

D. Faulty thermal sensor


39. What are the advantages to a liquid cooling system?

A. Much more efficient system, higher clock speeds, and increased noise from fan

B. CPU temperature maintained at ambient temperature, normal system

and clock speeds, and reduction of noise

C. More efficient system, higher clock speeds, noise reduction, and maintains CPU temperature at ambient temperature

D. There are no advantages to a liquid cooling system.


40. What are the disadvantages to a liquid cooling system?

A. Needs a large space in the case, must be custom installed, can cause leaks if improperly installed and injury to installer

B. Needs little to no space, tubes must be precisely cut and installed, and

no damage to system no matter who does the installing

C. Needs the same amount of space as a regular fan, contains no tubes,

and still needs custom installation

D. None of the above


aries answers unit 2 (hardware)

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