test 1 index answers
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The power supply in the PC is excessively dirty.
How would you clean it?
d) Compressed air
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A hard drive should not be:
d) formatted before removing from the computer
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What is the best method of cleaning a dusty PC
keyboard?
a) Remove the bezel and blow out the dust
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What do you use to check for line-voltage sags?
a) Polarity tester
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Which of the following is most likely to cause a
problem with an unprotected hard disk drive?
a) A magnetic field from a large speaker
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Which is not a reason why compressed air is
preferred over vacuuming for cleaning dust from
a circuit board?
c) Compressed air is less likely to spread dust
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Which of the following is most likely to protect a
personal computer system during an electrical
storm?
a) Totally disconnect all cables and power cords
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What do you use to check for line surges?
b) Line analyzer
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Which of the following statements are true? Pick
one:
e) All of the above
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Which of the following should be used to clean
the external plastic cabinets of computers and
their peripherals?
c) Damp cloth with a mild detergent
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The purpose of a line analyzer is: Choose one:
c) to warn of voltage spikes
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Which of the following would make a computer
installation safer?
d) Surge suppressers
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The hard drive makes a grinding noise. The
cause is probably:
a) HDI (Head-to-Disk Interface)
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During the POST, what does a single beep
indicate?
c) Normal operation of the PC
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Which of the following is NOT considered to be
a field replaceable unit (FRU)?
d) Power supply regulator
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During what process do you tell the PC the types
of drives being used?
c) SETUP
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Diagnostics indicate that you have several bad
field replaceable units (FRUs). What do you do?
d) Investigate further to determine if the software
is at fault
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Which of the following would most likely result
in the mouse pointer NOT being displayed when
you switch from DOS applications to Windowsapplications?
d) Wrong mouse driver in the SYSTEM.INI file
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During what process do you tell the PC the
amount of conventional or extended memory
being used?
a) SETUP
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Which of the following is least likely to be a
field replaceable unit?
c) A surface-mounted integrated circuit
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Which of the following components will hold a
charge even though power has been removed?
c) Capacitor
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Which of the following components holds a
charge after power has been removed?
c) Capacitors
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A multimeter is set up to DC, Ohms, and 20k.
How would a good 4-ampere fuse measure?
a) 0.00
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A multimeter is set up to DC, Ohms, and 20k.
How would a bad 4-ampere fuse measure?
b) Infinitely high
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The farad is the basic unit of measurement for:
c) capacitors
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A circuit board in a computer can be destroyed
by voltages as low as:
d) 30 volts
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What should an ordinary household wall outlet
measure?
c) 104-130 volts AC
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Which of the following can be caused by power
source (electric company and building wiring)
problems? Select one:
e) All of the above
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Which of the following voltage levels would you
not expect to find at the output of a typical
personal computer power supply? Choose one:
e) -24 V
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Which of the following voltages is NOT
normally present at the output of a personal
computer power supply?
e) 120 V
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The wires coming from the power supply in a
personal computer are color coded to specify
their purpose. What color are the ground (orcommon) wires?
b) Black
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Ohms is the basic unit of measurement for:
d) resistors
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What is the basic unit of measurement for
resistors?
b) Ohms
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What voltage should you measure on the yellow
wires coming from the power supply in a
personal computer?
c) +12 volts
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Which of the following best describes a standby power
supply?
d) It consists of a battery connected between the AC
line and the computer. The AC line simultaneously
charges the battery and supplies power to the computer.
When the AC line voltage is lost, the battery quickly
switches so it, instead the AC line, powers the computer
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What is the basic unit of measurement of
capacitors?
a) Farads
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Which of the following does not provide surge
protection?
b) A standby power supply (SPS)
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The best uninterruptible power supplies (UPS)
and standby power supplies (SPS) produce
which of the following output waveforms?
a) Sine waves
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Which of the following is the smallest power
interruption that can cause memory errors or the
computer to lock up?
b) 1/200 second
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If a power supply has "watts capacity" rating of
200, what does this mean?
d) The power supply can provide up to 200 watts
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When measuring an unknown voltage
a) start with the meter set to its highest range
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When using an ohmmeter:
a) remove power to the circuit before attachingthe meter
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Which of the following rules do not apply when using a
multimeter?
c) Current and voltage are measured across the
component with the power applied
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A new external modem does not work properly.
Which of the following should be checked?
Choose one:
e) All of the above
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The mouse works in MS-DOS but not in
Windows 3.1. What do you do?
a) Check for the proper mouse driver in the
SYSTEM.INI file
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You replaced your customer's motherboard.
Before returning the unit to the customer, what
should you do?
b) Run SETUP
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A customer calls with a printer problem. What
information should you gather first?
b) Customer name, Company name, type of
printer, nature of the problem
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A customer complains because he has been put
on hold several times. What should you do?
a) Apologize for the inconvenience
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A customer calls and tells you that the cable you
just sent him was defective. What do you do?
d) Replace the cable
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A customer complains that the company that
manufactured his computer is incompetent. What
do you tell him?
d) Inquire as to why he feels that way
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You are giving directions to a customer on the
phone. If the customer is having problems
following your directions, what should you notdo?
b) End the call because he can't follow directions
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You replace a faulty motherboard. Before
returning the computer to the customer, you
should:
a) run SETUP and setup the configuration
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A customer calls and says that his computer
keeps dying. After taking the customer's name,
what sequence of questions should you ask?
b) Computer type, what the problem is, number
of times it has occurred, set up an appointment
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A customer calls and says that their Desktop Publishing
System that was working fine yesterday will not
perform certain functions today. Which of the following
is the most appropriate question to ask?
a) Did anyone make any changes in the software or
hardware between yesterday and today?
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A customer complains that the printer you just
returned after being serviced has a broken paper
tray. What do you do?
a) Order a new paper tray for the customer
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A customer calls and complains that the
computer you just serviced is still not working
properly. What do you do?
d) Offer to replace or re-service the computer
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A customer calls and complains that the
computer you just returned after being serviced
is missing a power cord. What do you do?
b) Send out a replacement power cord
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A customer complains that his laptop computer
has lost the time and date information. What do
you do?
a) Tell him to recharge the battery and run
SETUP
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A t ll ith ti b t h t
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A customer calls with a question about how to
make a change in the AUTOEXEC.BAT file.
What do you do?
d) Politely answer the question
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Whi h f th f ll i i l t lik l t b
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Which of the following is least likely to be
affected by a virus?
c) BIOS in ROM
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A di tl d t i iti l f th
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A disgruntled customer is critical of the company
that made his equipment, what do you do?
c) Inquire as to why he feels that way and how
you can help
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Comp ter ir ses are most likel to be spread
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Computer viruses are most likely to be spread
via:
b) pirated games software
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Which of the following is not a recommended
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Which of the following is not a recommended
way to minimize damage caused by a computer
virus?
b) Frequently formatting your hard drive
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A PC virus is least likely to attach itself to:
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A PC virus is least likely to attach itself to:
a) a data file
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Which MS DOS files are concerned with
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Which MS-DOS files are concerned with
viruses?
a) MSAV, VSAFE, and MWAV
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A virus is detected and successfully removed
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A virus is detected and successfully removed
from a customer's PC. What additional action
should be taken to prevent re-infection?
b) Scan all floppy disks that have been used
recently on the PC
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Which of the following files is most likely to
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Which of the following files is most likely to
harbor a virus?
a) COMMAND.COM
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Which of the following statements about PC
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Which of the following statements about PC
viruses is not true?
d) The PC can not be infected by attempting to
boot from a non-bootable floppy
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A customer complains because he has been on
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A customer complains because he has been on
hold for so long. What should you do?
d) Apologize for the inconvenience
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A customer complains because a technician did
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A customer complains because a technician did
not return his call. What should you do?
c) Apologize for the inconvenience
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What is the best ground to use when working on
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What is the best ground to use when working on
a personal computer?
c) AC outlet ground
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When should you not wear a wrist band ground
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When should you not wear a wrist band ground
strap?
d) When working around an exposed cathode ray
tube (CRT).
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Once an IC is mounted on a circuit board it is:
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b) still susceptible to ESD damage
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Which of the following could generate
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g g
electrostatic voltages high enough to cause ESD
damage?
d) Any one of the above
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When shipping a board from one place to
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pp g p
another, to avoid ESD damage, the board should
be:
a) placed inside an anti-static bag
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When you use the computer chassis for ground,
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y p g
what should you do?
a) Keep the line cord plugged into an AC outlet
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Select the incorrect answer. Sometimes ESD
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damage:
c) will "toughen" the computer against future
ESD damage
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Which of the following techniques is the best
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way to prevent ESD damage?
a) Wear a properly connected ESD wrist strap
when you work on microcomputer equipment
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Which of the following types of mat will reduce
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static electricity problems?
c) Rubber
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Which of the following statements is false?
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a) You can feel any electrostatic dischargestrong enough to damage an IC.
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Which is incorrect? An electrostatic potential too
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small to be felt by a human:
b) cannot harm a properly installed IC
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Why is it important that you use AC outlet
d h ki i h i
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ground when working with computer equipment?
c) It is generally the most reliable earth ground
that is readily available
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Why is it NOT a good idea to wear a wrist band
d h ki d d
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ground strap when working around an exposed
cathode ray tube (CRT)?
d) All of the above
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Which of the following devices will reduce the
i k f ESD?
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risk of ESD?
c) Ion generator
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Which of the following semiconductors is most
tibl t l t i l i d ESD?
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susceptible to electrical noise and ESD?
c) CMOS
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Why should you keep the AC line cord plugged
i if i th t h i
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in if you are using the computer chassis as your
source of ground?
b) To ensure that the computer chassis is at earth
ground
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An integrated circuit can be destroyed by a
lt l
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voltage as low as:
a) 30 volts
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A wrist grounding strap contains a:
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a) resistor
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Why is a CMOS memory chip more susceptible
to ESD damage than its earlier TTL counterpart?
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to ESD damage than its earlier TTL counterpart?
b) The dimensions of the transistors in CMOS
are much smaller
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Which of the following devices will NOT reduce
the risk of ESD damage?
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the risk of ESD damage?
d) A line analyzer
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When shipping a circuit board from one place to
another you should first place the board in a(n):
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another, you should first place the board in a(n):
d) antistatic container
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. When you work with solid-state devices,
which of the following may help prevent ESD
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which of the following may help prevent ESD
damage? Choose one:
e) All of the above
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Which of the following statements is true?
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c) ESD damage is a leading cause of hardware
failure during the shipping, handling, and
installation of printed circuit boards and ICs
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Why does a ground strap often include a resistor
in the grounding path?
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in the grounding path?
a) To limit the current to a safe level should the
wearer experience an electrical shock
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Using the computer chassis as a ground is most
effective when:
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effective when:
b) the computer is still plugged into the AC
outlet
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