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Review questions chapter 1
1.
Which is faster, a Hi
-
Speed USB port or a SuperSpeed USB port?
SuperSpeed USB is faster than Hi
Speed USB
2.
What type of output does a S/PDIF port provide
High quality sound to an audio s
ystem
3.
List five types of video ports.
VGA, S
Video, DVI, HDMI, DisplayPort video ports
4.
What is the purpose of an expansion slot on a motherboard?
An expansion slot on a motherboard is used for an expansion card, which provides a port
or other function that
is not provided by the motherboard
5.
What should be the setting for a dual
voltage selector switch on a power supply when
using the computer in the United States?
Set the switch to 115 volts
6.
What unit of measure is used to
describe
the amount of work a s
urge suppressor
can do before it stops protecting the circuit from an electrical surge?
Joule
7.
Hot wires in
home
wiring are normally colored ____ and ground wires in
computers are normally colored _____.
Black, black
8.
What is the difference between a transfo
rmer and a rectifier? Which are found in a
PC power supply?
A rectifier is a device that converts alternating current to direct current. A transformer is a device
that changes the ratio of current to voltage. A computer power supply functions as both.
9.
What
device can you use to make sure a computer is protected against power surges?
A surge suppressor
10.
A power supply receives 120 volts of ___ power from a wall outlet and converts it to 3.3,
5, and 12 volts of ____ power.
AC, DC
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