Download - Test 1 Index Answers

8/4/2019 Test 1 Index Answers

1/95

The power supply in the PC is excessively dirty.

How would you clean it?

d) Compressed air

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2/95

A hard drive should not be:

d) formatted before removing from the computer

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3/95

What is the best method of cleaning a dusty PC

keyboard?

a) Remove the bezel and blow out the dust



4/95

What do you use to check for line-voltage sags?

a) Polarity tester




5/95

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




6/95

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




7/95

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



8/95

What do you use to check for line surges?

b) Line analyzer




9/95

Which of the following statements are true? Pick

one:

e) All of the above




10/95

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



11/95

The purpose of a line analyzer is: Choose one:

c) to warn of voltage spikes



12/95

Which of the following would make a computer

installation safer?

d) Surge suppressers



13/95

The hard drive makes a grinding noise. The

cause is probably:

a) HDI (Head-to-Disk Interface)



14/95

During the POST, what does a single beep

indicate?

c) Normal operation of the PC



15/95

Which of the following is NOT considered to be

a field replaceable unit (FRU)?

d) Power supply regulator



16/95

During what process do you tell the PC the types

of drives being used?

c) SETUP



17/95

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



18/95

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



19/95

During what process do you tell the PC the

amount of conventional or extended memory

being used?

a) SETUP



20/95

Which of the following is least likely to be a

field replaceable unit?

c) A surface-mounted integrated circuit



21/95

Which of the following components will hold a

charge even though power has been removed?

c) Capacitor



22/95

Which of the following components holds a

charge after power has been removed?

c) Capacitors



23/95

A multimeter is set up to DC, Ohms, and 20k.

How would a good 4-ampere fuse measure?

a) 0.00




24/95

A multimeter is set up to DC, Ohms, and 20k.

How would a bad 4-ampere fuse measure?

b) Infinitely high




25/95

The farad is the basic unit of measurement for:

c) capacitors




26/95

A circuit board in a computer can be destroyed

by voltages as low as:

d) 30 volts




27/95

What should an ordinary household wall outlet

measure?

c) 104-130 volts AC




28/95

Which of the following can be caused by power

source (electric company and building wiring)

problems? Select one:

e) All of the above




29/95

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




30/95

Which of the following voltages is NOT

normally present at the output of a personal

computer power supply?

e) 120 V




31/95

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




32/95

Ohms is the basic unit of measurement for:

d) resistors




33/95

What is the basic unit of measurement for

resistors?

b) Ohms




34/95

What voltage should you measure on the yellow

wires coming from the power supply in a

personal computer?

c) +12 volts




35/95

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




36/95

What is the basic unit of measurement of

capacitors?

a) Farads




37/95

Which of the following does not provide surge

protection?

b) A standby power supply (SPS)




38/95

The best uninterruptible power supplies (UPS)

and standby power supplies (SPS) produce

which of the following output waveforms?

a) Sine waves




39/95

Which of the following is the smallest power

interruption that can cause memory errors or the

computer to lock up?

b) 1/200 second




40/95

If a power supply has "watts capacity" rating of

200, what does this mean?

d) The power supply can provide up to 200 watts




41/95

When measuring an unknown voltage

a) start with the meter set to its highest range




42/95

When using an ohmmeter:

a) remove power to the circuit before attachingthe meter




43/95

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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44/95

A new external modem does not work properly.

Which of the following should be checked?

Choose one:

e) All of the above




45/95

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




46/95

You replaced your customer's motherboard.

Before returning the unit to the customer, what

should you do?

b) Run SETUP




47/95

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




48/95

A customer complains because he has been put

on hold several times. What should you do?

a) Apologize for the inconvenience




49/95

A customer calls and tells you that the cable you

just sent him was defective. What do you do?

d) Replace the cable




50/95

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




51/95

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




52/95

You replace a faulty motherboard. Before

returning the computer to the customer, you

should:

a) run SETUP and setup the configuration




53/95

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




54/95

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?




55/95

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




56/95

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



ll d l i h h


57/95

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



A l i h hi l


58/95

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



A t ll ith ti b t h t


59/95

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



Whi h f th f ll i i l t lik l t b


60/95

Which of the following is least likely to be

affected by a virus?

c) BIOS in ROM



A di tl d t i iti l f th


61/95

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



Comp ter ir ses are most likel to be spread


62/95

Computer viruses are most likely to be spread

via:

b) pirated games software



Which of the following is not a recommended


63/95

Which of the following is not a recommended

way to minimize damage caused by a computer

virus?

b) Frequently formatting your hard drive



A PC virus is least likely to attach itself to:


64/95

A PC virus is least likely to attach itself to:

a) a data file



Which MS DOS files are concerned with


65/95

Which MS-DOS files are concerned with

viruses?

a) MSAV, VSAFE, and MWAV



A virus is detected and successfully removed


66/95

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



Which of the following files is most likely to


67/95

Which of the following files is most likely to

harbor a virus?

a) COMMAND.COM



Which of the following statements about PC


68/95

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



A customer complains because he has been on


69/95

A customer complains because he has been on

hold for so long. What should you do?

d) Apologize for the inconvenience



A customer complains because a technician did


70/95

A customer complains because a technician did

not return his call. What should you do?

c) Apologize for the inconvenience



What is the best ground to use when working on


71/95

What is the best ground to use when working on

a personal computer?

c) AC outlet ground



When should you not wear a wrist band ground


72/95

When should you not wear a wrist band ground

strap?

d) When working around an exposed cathode ray

tube (CRT).



Once an IC is mounted on a circuit board it is:


73/95

b) still susceptible to ESD damage



Which of the following could generate


74/95

g g

electrostatic voltages high enough to cause ESD

damage?

d) Any one of the above



When shipping a board from one place to


75/95

pp g p

another, to avoid ESD damage, the board should

be:

a) placed inside an anti-static bag



When you use the computer chassis for ground,


76/95

y p g

what should you do?

a) Keep the line cord plugged into an AC outlet



Select the incorrect answer. Sometimes ESD


77/95

damage:

c) will "toughen" the computer against future

ESD damage



Which of the following techniques is the best


78/95

way to prevent ESD damage?

a) Wear a properly connected ESD wrist strap

when you work on microcomputer equipment



Which of the following types of mat will reduce


79/95

static electricity problems?

c) Rubber



Which of the following statements is false?


80/95

a) You can feel any electrostatic dischargestrong enough to damage an IC.



Which is incorrect? An electrostatic potential too


81/95

small to be felt by a human:

b) cannot harm a properly installed IC



Why is it important that you use AC outlet

d h ki i h i


82/95

ground when working with computer equipment?

c) It is generally the most reliable earth ground

that is readily available



Why is it NOT a good idea to wear a wrist band

d h ki d d


83/95

ground strap when working around an exposed

cathode ray tube (CRT)?

d) All of the above



Which of the following devices will reduce the

i k f ESD?


84/95

risk of ESD?

c) Ion generator



Which of the following semiconductors is most

tibl t l t i l i d ESD?


85/95

susceptible to electrical noise and ESD?

c) CMOS



Why should you keep the AC line cord plugged

i if i th t h i


86/95

in if you are using the computer chassis as your

source of ground?

b) To ensure that the computer chassis is at earth

ground



An integrated circuit can be destroyed by a

lt l


87/95

voltage as low as:

a) 30 volts



A wrist grounding strap contains a:


88/95

a) resistor



Why is a CMOS memory chip more susceptible

to ESD damage than its earlier TTL counterpart?


89/95

to ESD damage than its earlier TTL counterpart?

b) The dimensions of the transistors in CMOS

are much smaller



Which of the following devices will NOT reduce

the risk of ESD damage?


90/95

the risk of ESD damage?

d) A line analyzer



When shipping a circuit board from one place to

another you should first place the board in a(n):


91/95

another, you should first place the board in a(n):

d) antistatic container



. When you work with solid-state devices,

which of the following may help prevent ESD


92/95

which of the following may help prevent ESD

damage? Choose one:

e) All of the above



Which of the following statements is true?


93/95

c) ESD damage is a leading cause of hardware

failure during the shipping, handling, and

installation of printed circuit boards and ICs



Why does a ground strap often include a resistor

in the grounding path?


94/95

in the grounding path?

a) To limit the current to a safe level should the

wearer experience an electrical shock



Using the computer chassis as a ground is most

effective when:


95/95

effective when:

b) the computer is still plugged into the AC

outlet



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