Computer Hardware, Science Questions and Answers [Part – 1]


Hey friends, how are you? I think you are fine. Happy X-mas in advanced. Form Today I will start a new topic for hardware student, who is preparing for HS exam or another computer related exam. I will give you all A+ exam question and answer part by part. Here is the 1st part. Keep following my post for the next part.

Top 50 Computer Hardware, Science Questions and Answers

Computer Hardware | Science Questions and Answers
Computer Hardware | Science Questions and Answers

1: 9 bit SIMMs have how many pins?

A: 30

2: How many bits is the system data bus for a Pentium Processor?
A: 64

3: How many bits is the data bus for a 486DX4 processor?
A: 32

4: A serial data port on your PC would have how many pinouts?
A: 9

5: How many wires does the standard IDE drive cable have? 
A: 40

6: How big is the conventional memory in a PC?
A: 640K

7: How many bits is the system bus for a 386SX processor?
A: 16

8: How many bits is the system bus for a 386 DX processor?
A: 32

9: What is the maximum length for a parallel cable?
A: 15 ft.

10: What IRQ does the real time clock use? 
A: 8

11: What form of software can also be called firmware?
A: System BIOS

12: What would you set your multimeter to if you wanted to detect an AC ripple?
A: AC Voltage

13: After you install a new floppy drive and restart the system, the floppy drive light stays on constantly and you get an “FDD Controller Failure” POST error. What is the problem?
A: Floppy cable is on backward

14: What type of port communicates information to a peripheral device one bit at a time?
A: Serial port

15: Should you wear a grounding strap when servicing a CRT monitor?
A: No

16: What are the 4 types of DC voltage usually produced by a power supply?
A: +5V

17: If your monitor just shows dots when you turn it on, what is most likely the problem?
A: Bad Video RAM

18: You have 2 hard drives installed on your primary EIDE controller. You install a CD-ROM on your secondary EIDE controller. What jumper setting would you use for the CD-ROM?
A: Master

19: What factor determines the amount of RAM a CPU can control?
A: Width of the Address Bus

20: What would you use to clean a monitor screen? 
A: Anti-static spray

21: Missing slot covers on a PC can cause what problem?
A: Overheating

22: A 15 pin, three rows, female connector on the back of a PC would be used for?
A: VGA/SVGA port

23: On a laser printer the primary corona does what?
A: Places a uniform negative charge on the photosensitive drum.

24: The correct AT command to tell a modem to hang up is?

25: Using a portion of hard disk space to serve as RAM is called?
A: Virtual Memory

26: The AT command to tell a modem to dial a number is?
A: ATD {number}

27: How many pins does a Joystick or MIDI port connector have?
A: 15

28: How can you tell that a PC has successfully completed its Power on Self Test (POST)?
A: A single beep at startup

29: Locations in memory are referred to as?
A: Addresses

30: On a laser printer, the laser beam performs what function?
A: Changes the charge on the photosensitive drum

31: Which electrical component will hold a charge even when no voltage is being applied?
A: Capacitor

32: What is the IDE CMOS/BIOS limit for the size of a hard drive?
A: 528 million bytes or 504 MegaBytes

33: You can probably determine that a monitor is working, even though it is not connected to a PC, by performing what action?
A: Turn up the brightness to see if the raster appears.

34: What purpose does the system ROM serve?
A: Starts the system when the computer is turned on.

35: A SIMM stick has 9 DRAM chips. How many bits is it wide?
A: 8 bits + parity

36: What is the difference between SRAM and DRAM?
A: SRAM has built in switches and does not have to be refreshed.

37: What type of printers are considered impact printers?
A: Dot Matrix and Daisy Wheel

38: How does a Pentium Pro processor differ from a Pentium processor?
A: Pentium Pro has onboard L2 cache

39: What is the binary equivalent of decimal 3. 
A: 011

40: In order for a device to communicate with the CPU it must have?
A: An I/O Address

41: The lower the SIMM access rate the ___________ the memory.
A: Faster

42: Your PC is working perfectly, but you notice the power supply fan has stopped working. What should you do?
A: Replace the power supply

43: What does DMA stand for?
A: Direct Memory Address

44: Capacitance is measured in units called?
A: Farads

45: The default memory address for the monochrome region of memory is?
A: B0000 – B7FFF

46: What does PIO stand for?
A: Programmed Input/Output

47: In serial communication, the setting 8,N,1 means?
A: 8 data bits, no parity, 1 stop bit

48: The 2 most important considerations when selecting a surge suppressor are?
A: Clamping speed and Clamping voltage

49: Your sound card locks up your parallel port tape device when both are running. What is probably the problem?
A: IRQ conflict

50: You apply a password to CMOS but later forget it. What should you do?
A: Clear the CMOS by shorting the CMOS jumper.

Read (Part 2)

Biswajit Das
"If no one responds to your call, then go your own way alone". Open thy mind thy mind walk alone walk alone We not afraid, walk alone Open thy mind, walk alone. ---------------------------------------- A clear rejection is always better than a fake promise.