Computer Science - Computer Hardware Part 4

1. The digital multimeter is set for DC, Ohm and 20k. You will read _____ while measuring a good 2 amp fuse.

A.
0.00

B.
0.02

C.
0.20

D.
2.00

E.
None of the above

 Answer Option A

2. IDE cables have how many pins?

A.
25

B.
50

C.
100

D.
40

E.
65

 Answer Option D

3. Which of the following statements is true?

A.
Two SCSI devices connected to a computer can have the same ID if they are both hard drives.

B.
Each SCSI device must have its own ID

C.
All SCSI devices must have the same ID

D.
SCSI ID's are irrelevant

E.
None of the above

 Answer Option B

4. What is the recommended way to fix the registry description for the printer driver

A.
Delete the spool file

B.
Run regedit.exe and remove any reference to the printers

C.
Run sysedit.exe and remove any reference to the printers

D.
Remove the printer driver and re¬install it

E.
None of the above

 Answer Option D

5. An important first step in troubleshooting which component in a laser printer is causing a jam is to:

A.
note where in the paper path the paper stops

B.
check all voltages

C.
look up error codes

D.
turn the printer off, then on again

E.
remove the jammed paper

 Answer Option A

6. Which of the following items would require you t.o comply with EPA disposal guidelines?

A. Keyboard

B. System board

C. Power supply

D. Battery

E. None of the above

 Answer Option D

7. What should you replace if the brightness or contrast adjustments were malfunctioning on a laptop?

A. fuse

B. led display

C. adjustment switch

D. led display cable

E. None of the above

 Answer Option B

8. One of the major components of a PC is the Central Processing Unit (CPU) which can be best described as:

A. The device that sends the monitor signals telling it what to display

B. The area that regulates all of the system power usage

C. The area where all the of the Basic input/output routines are stored

D. The area where all of the processing takes place

E. None of the above

 Answer Option D

9. On a leased line installation a known good external modem shows no carrier detect light. Where is the problem most likely to be?

A. In the modem

B. In the phone line

C. In the computer

D. In the DTC equipment

E. None of the above

 Answer Option B

10. What IRQ is used for COM 2?

A. 4

B. 3

C. 2

D. 1

E. None of the above

 Answer Option B

11. What is the size of the reserved memory area?

A. 64 kb

B. 384 kb

C. 640 kb

D. 1024 kb

E. None of the above

 Answer Option B

12. Which would you have to upgrade to install an EIDE drive?

A. RAM BIOS

B. A 286 CPU

C. Controller board

D. ISA motherboard

E. None of the above

 Answer Option C

13. Dust in a computer actually increases the size of the magnetic fields inside it. This is not good, so you must occasionaiy dust, I trust. What's the best way to do this?

A. reverse vacuum

B. any small vacuum device

C. blow real hard on the system board

D. use a lint-free cloth and wipe gently

E. non-static compressed air

 Answer Option E

14. A parity error usually indicates a problem with:

A. memory

B. hard drive

C. hard drive controller

D. I/O controller

E. power supply

 Answer Option A

15. What is the i/o address for com1?

A. 3e8

B. 3bc

C. 5f8

D. 3f8

E. 008

 Answer Option D

16. The monitor power LED is 'on' but the monitor screen is completely dark. The least likely cause of the problem is:

A. Defect in the computers video circuitry

B. Disconnected video cable

C. Defective monitor

D. System RAM problem

E. None of the above

 Answer Option D

17. You are about to install a second IDE hard drive in a PC that has only one IDE adapter. Your first hard drive will still be the boot drive. How should the second drive be configured?

A. as a master

B. as a secondary

C. as a slave

D. as a primary

E. as auto-select

 Answer Option C

18. What is your first action when windows reports that your hard drive is developing bad sectors?

A. replace the hard drive

B. run secclean from dos

C. run defrag on the hard drive

D. run scandisk with the "thorough" option

E. None of the above

 Answer Option D

19. In laser technology, what happens during the transfer stage?

A. Residual toner is transferred to the waste receptacle

B. The laser transfers the image from the drum to the paper.

C. The image is transferred from the drum to the paper

D. A negative charge is transferred to the surface of the drum

E. None of the above

 Answer Option C

20. How many IRQs does a chain of USB devices require?

A. 1

B. 2

C. 3

D. 4

E. None of the above

 Answer Option A

21. Resistance is measured in units of:

A. ohms

B. farads

C. helids

D. amperes

E. volts

 Answer Option A

22. Which provides the fastest data access time?

A. RAM

B. ROM

C. CD-ROM

D. Hard disk

E. Floppy disk

 Answer Option A

23. How is ink transferred to paper in common ink jet printers?

A. Boiling ink

B. Crystal

C. Motorized pump

D. Screens deflect ink on the paper into the proper positions

E. Ink is sprayed on to the paper and managed by a nozzle

 Answer Option B

24. Which component must be vacuumed or replaced during preventative maintenance on a laser printer?

A. Scanning mirror

B. Toner cartridge

C. Ozone filter

D. All of the above

E. None of the above

 Answer Option C

25. Which controller would support an external CD-ROM drive?

A. ESDI

B. ARLL

C. MFM

D. SCSI

E. None of the above

 Answer Option D

26. In inkjet printers, what is the most common problem with the paper tray?

A. inconsistent printing

B. malfunctioning pick-up rollers

C. misalignment of the sheet feeder

D. paper jamming on the ink cartridge

E. None of the above

 Answer Option B

27. A customer calls and says her computer won't boot, she can hear noises and can see lights on the box, but nothing comes up on the screen, what should you take to the site to fix the problem?

A. hard drive

B. video card

C. power cable

D. power supply

E. None of the above

 Answer Option B

28. The DC voltage on most circuit boards is:

A. -12 volts

B. 0 volts

C. +5 volts

D. +12 volts

E. None of the above

 Answer Option C

29. On a dot-matrix printer, regular lube maintenance should be followed, but this component should never be lubed:

A. Platten bearings

B. Carriage rails

C. Printhead

D. Paper advance bearings

E. None of the above

 Answer Option C

30. The buffers statement is found in what file?

A. Config.sys

B. Autoexec.ncf

C. Autoexec.bat

D. Neb.cfg

E. None of the above

 Answer Option A

31. What configuration should a Volt-Ohm meter he set to when testing a fuse?

A. DC volts

B. AC volts

C. Amperage

D. Ohms

E. None of the above

 Answer Option D

32. What voltage does a 586 system use?

A. +12 volts

B. + 5 volts

C. + 8 volts

D. +3.3 volts

E. None of the above

 Answer Option B

33. What action will correct patchy, faint, uneven or intermittent print on a dot matrix printer?

A. Replacing the ribbon

B. Replacing the timing belt

C. Adjusting the paper feed tension

D. Adjusting the tractor feed tension

E. None of the above

 Answer Option A

34. If the voltage on pin 1 of the power supply is not in the range of _____ volts, the PC will not boot.

A. 10 - 20

B. 1 - 5

C. 50 - 110

D. 15 - 25

E. 2.5 - 5

 Answer Option E

35. What are the most likely conditions for ESD?

A. Hot and dry

B. Hot and wet

C. Cold and dry

D. Cold and wet

E. None of the above

 Answer Option B

36. What is the i/o address for com3?

A. 3e8

B. 345

C. ff8

D. 5e8

E. be8

 Answer Option A

37. The following process determines the amount of memory present, the date/ time, and which communications ports and display adapters are installed in a microcomputer?

A. Start-up utility test

B. Power on Self Test

C. Power up boot process

D. Power on start up process

E. None of the above

 Answer Option B

38. In the DOS memory model, the HIGH Memory Area (HMA). is the _____ memory.

A. Last 64k of conventional

B. Last 64k of extended

C. First 64k above conventional

D. First 64k of extended

E. None of the above

 Answer Option D

39. In addition to I/O port addresses, SCSI adapters also use a range of ROM addresses for their onboard BIOS.

A. True

B. False

 Answer Option A

40. COM1 is typically represented by which of the following?

A. 15 pin port

B. 9 pin male port

C. 9 pin female port

D. 25 pin male port

E. None of the above

 Answer Option B

41. A PC with a 486DX2 processor runs internally at 50Mhz. What speed would its external logic be running?

A. l0Mhz

B. 25Mhz

C. 50Mhz

D. 100 Mhz

E. None of the above

 Answer Option B

42. A capacitor is measured in which of the following units?

A. Volts

B. Ohms

C. Farads

D. Resistance

E. None of the above

 Answer Option C

43. Which device uses a DMA channel?

A. Modem

B. Network Card

C. Sound Card

D. All of the above

E. None of the above

 Answer Option C

44. Which REQUIRES an anti-static bag for transport?

A. Monitor

B. Floppy disks

C. Power supply

D. I/O controller

E. None of the above

 Answer Option D

45. Static electricity thrives is which type of environment?

A. cold and humid

B. warm and humid

C. warm and dry

D. cold and warm

E. cold and dry

 Answer Option E

46. ESD potential decreases with the use of:

A. De-ionizing fans

B. A wrist strap

C. Rubber gloves with matching cap

D. A static meter

E. None of the above

 Answer Option B

47. With a dot matrix printer, light then dark print is most commonly caused by:

A. Erratic paper advancement

B. Erratic ribbon advancement

C. Misalligned print head

D. Overheating print head

E. None of the above

 Answer Option B

48. How many DMA channels are there in an AT class PC?

A. 3

B. 4

C. 7

D. 8

E. None of the above

 Answer Option D

49. A wrist grounding strap contains which of the following:

A. Surge protector

B. Capacitor

C. Voltmeter

D. Resistor

E. None of the above

 Answer Option D

50. Every video card must have?

A. CMOS

B. RAM

C. CPU

D. All of the above

E. None of the above

 Answer Option B