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IT > Quiz 7 > Flashcards

Quiz 7 Flashcards

1
Q

The pressure of the electrons in a wire is measured in units called _______________.

a. ohms
b. watts
c. amperes
d. volts

A

d. volts

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2
Q

Which unit is used to measure current?

a. Watt
b. Volt
c. Ampere
d. Ohm

A

c. Ampere

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3
Q

Which unit is used to express the number of amps and volts needed by a particular device to function?

a. Ampere
b. Volt
c. Watt
d. Ohm

A

c. Watt

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4
Q

Which unit is used to measure resistance?

a. Watt
b. Ampere
c. Ohm
d. Joule

A

c. Ohm

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5
Q

What type of voltage does a PC use?

a. DC
b. Ground
c. AC
d. LC

A

a. DC

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6
Q

In an IEC-320 plug, which wire carries electrical voltage?

a. Ground
b. Hot
c. Earth
d. Neutral

A

b. Hot

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7
Q

Which type of wire carries no voltage?

a. Ground
b. Hot
c. Multimeter
d. Neutral

A

d. Neutral

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8
Q

A coworker is taking a computer overseas and asks you what concerns he should have. What do you tell him?

a. Prepare for the fact that his PC will not work overseas.
b. Make sure he switches the power supply to 230AC.
c. Make sure he switches the power supply to 115AC.
d. Rest assured that there are no issues with computer use overseas.

A

b. Make sure he switches the power supply to 230AC

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9
Q

What should be the outputs of the hot, neutral, and ground wires, respectively, when tested with a multimeter?

a. 0 V, 115 V, 2 V
b. 115 V, 0 V, 0 V
c. 112 V, 115 V, 0 V
d. 0 V, 115 V, 0 V

A

b. 115 V, 0 V, 0 V

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10
Q

How is DC voltage represented on multimeters?

a. V with a ~ above it
b. V with a dash below it
c. V with a solid line above a dashed line
d. V with a ~ below it

A

c. V with a solid line above a dashed line

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11
Q

A surge suppressor should have a rating of at least _______________.

a. 1449-V
b. 800-V
c. 330-V
d. 400-V

A

c. 330-V

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12
Q

What UL rating is preferred for a surge suppressor?

a. UL1449
b. UL497A
c. UL1497A
d. 1750 joules

A

a. UL1449

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13
Q

Large sags in electricity are also known as _______________.

a. brownouts
b. blackouts
c. surges
d. spikes

A

a. brownouts

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14
Q

What occurs when power cuts out completely?

a. Brownout
b. Blackout
c. Sag
d. Spike

A

b. Blackout

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15
Q

How should an electronic device be protected during an electrical storm?

a. Connect the device to a UPS.
b. Place the device in standby mode.
c. Unplug the device.
d. Connect the device to a surge suppressor.

A

c. Unplug the device

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16
Q

Power supplies come with a standard _______________ for the motherboard and interior devices.

a. connector
b. suppressor
c. pin
d. hole

A

a. connector

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17
Q

Modern motherboards use a 20- or 24-pin _______________.

a. P1
b. P4
c. P2
d. P3

A

a. P1

18
Q

The standard modern power supply provides _______________ volts of power.

a. 6.0 and 12.0
b. 5.0 and 12.0
c. 12.0
d. 3.3, 5.0, and 12.0

A

d. 3.3, 5.0, and 12.0

19
Q

Which connector is the most common type of connector used for devices that require 5 V or 12 V of power?

a. P4 12 V
b. Molex
c. P1
d. sub-mini connector

A

b. Molex

20
Q

The largely extinct 3.5-inch floppy disk drive uses the _______________ connector.

a. P1
b. Molex
c. P4 12V
d. mini

A

d. mini

21
Q

Mini connectors (Berg connectors) are used for _______________ power.

a. AC
b. peripheral
c. central
d. backup

A

b. peripheral

22
Q

Most case fans have standard _______________ connectors that are easy to plug in but can be forced to be connected the wrong way.

a. micro
b. mini
c. Molex
d. sub-mini

A

c. Molex

23
Q

The notches that guide installation in the Molex connector are called _______________.

a. channels
b. chamfers
c. ports
d. sockets

A

b. chamfers

24
Q

Modern power supplies have multiple _______________.

a. connectors
b. fuses
c. fans
d. voltage selectors

A

a. connectors

25
Q

What type of power connector is L-shaped?

a. SATA
b. P1
c. Molex
d. Mini

A

a. SATA

26
Q

Which tool uses the soft power feature?

a. Molex power supply
b. SATA connectors
c. ATX
d. AT

A

c. ATX

27
Q

Which power supply never turns off?

a. P8, P9
b. P1
c. AT
d. ATX

A

d. ATX

28
Q

Which industry group came up with a non-ATX standard motherboard and power supply called EPS12V?

a. Hardware System Infrastructure
b. Server System Infrastructure
c. Software System Infrastructure
d. Server Power Infrastructure

A

b. Server System Infrastructure

29
Q

The _______________ power supply has a 24-pin main motherboard that resembles a 20-pin ATX connector.

a. EPS12V
b. mini
c. Molex
d. P421V

A

a. EPS12V

30
Q

Which is the latest ATX power supply standard?

a. EPS12V
b. ATX12V 2.0
c. ATX12V 3.0
d. ATX12V 1.3

A

b. ATX12V 2.0

31
Q

In the past, how much power was supplied by power supplies with 12-V rails?

a. 18 amps
b. 30 amps
c. 3 amps
d. 81 amps

A

a. 18 amps

32
Q

How many watts of power does a typical hard drive in a PC require?

a. 15
b. 20
c. 25
d. 10

A

a. 15

33
Q

How many watts of power does an Intel i7-4790K require at peak performance?

a. 101
b. 151
c. 200
d. 50

A

b. 151

34
Q

A(n) _______________ power supply smooths out power coming from the wall before passing it to the main power supply circuits, which eliminates harmonics.

a. UPS
b. SPS
c. Active PFC
d. EPS 12V

A

c. Active PFC

35
Q

Power supplies are rated for efficiency based on _______________ drawn to supply sufficient power to the PC.

a. volts
b. watts
c. amperes
d. ohms

A

b. watts

36
Q

Empty expansion bays must be covered by a _______________ to maintain proper airflow inside the case.

a. slot cover
b. case cover
c. case sheath
d. slot lid

A

a. slot cover

37
Q

Which statement is true of computer cases?

a. Small cases do not require cooling.
b. An open case lowers cooling efficiency.
c. Large cases do not require cooling.
d. An open case allows for better cooling.

A

b. An open case lowers cooling efficiency.

38
Q

A PC does not work. What should you check first?

a. The tower supply voltages
b. Whether the DC plug is plugged in
c. Whether the AC plug is plugged in
d. The 12 V power supply

A

c. Whether the AC plug is plugged in

39
Q

What class of fire extinguisher should be used on an electrical fire?

a. Class A
b. Class B
c. Class C
d. Class D

A

c. Class C

40
Q

If a power supply is smoking or heating up, what is the best action to take?

a. Stop using it and replace it immediately.
b. Replace the power supply fan.
c. Switch the voltage from 110 to 220.
d. Replace the fuse.

A

a. Stop using it and replace it immediately.

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