Practice high-yield Computer Science & IT MCQs on Computer Hardware — Part 2 with worked academic solutions for PPSC, FPSC, CSS, PMS, NTS.
Questions
40
Difficulty Level
Exam-Level
Target Exams
PPSC, FPSC, CSS...
Estimated Time
48 mins
Exam-Level PPSC FPSC CSS PMS NTS
Verified for Commission Syllabus • Oct 14, 2026
40
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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🎉 Set complete! All 40 questions answered.
Question 1 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
On the PC side, the printer port is a:
Correct Answer: Option E — 25 pin female parallel connector
Detailed Academic Explanation:
25 pin female parallel connector is the correct answer to “On the PC side, the printer port is a:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 2 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
You were installing an application in Windows 95, and the computer crashes, what do you do?
Correct Answer: Option D — turn off computer and boot from a floppy disk
Detailed Academic Explanation:
turn off computer and boot from a floppy disk is the correct answer to “You were installing an application in Windows 95, and the computer crashes, what do you do”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 3 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
RS-232 is a standard that applies to:
Correct Answer: Option A — serial ports
Detailed Academic Explanation:
serial ports is the correct answer to “RS-232 is a standard that applies to:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 4 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
You just installed a new IDE hard drive, but your system BIOS will not recognize the new drive, what should you check first.
Correct Answer: Option B — jumpers on the hard drive
Detailed Academic Explanation:
jumpers on the hard drive is the correct answer to “You just installed a new IDE hard drive, but your system BIOS will not recognize the new drive, what should you check first.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 5 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
During boot-up, the memory test:
Correct Answer: Option B — Checks and verifies that contiguous memory is installed
Detailed Academic Explanation:
Checks and verifies that contiguous memory is installed is the correct answer to “During boot-up, the memory test:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 6 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What is the best ground for a conductive work bench?
Correct Answer: Option A — AC outlet
Detailed Academic Explanation:
AC outlet is the correct answer to “What is the best ground for a conductive work bench”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 7 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Topically, how many type III PC cards can you insert in a laptop
Correct Answer: Option A — 1
Detailed Academic Explanation:
1 is the correct answer to “Topically, how many type III PC cards can you insert in a laptop”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 8 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What is the first thing you could do to check for damage to a printer after receiving it?
Correct Answer: Option D — Unbox it and examine it for physical damage
Detailed Academic Explanation:
Unbox it and examine it for physical damage is the correct answer to “What is the first thing you could do to check for damage to a printer after receiving it”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 9 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
You have a system that periodically locks up. You have ruled out software, and now suspect that it is hardware. What should you do first that could help you narrow it down to the component at fault?
Correct Answer: Option D — disable the CPU cache in CMOS
Detailed Academic Explanation:
disable the CPU cache in CMOS is the correct answer to “You have a system that periodically locks up. You have ruled out software, and now suspect that it is hardware. What should you do first that could help you narrow it down to the component at fault”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 10 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What's the best way to protect your hard drive data?
Correct Answer: Option A — regular backups
Detailed Academic Explanation:
regular backups is the correct answer to “What's the best way to protect your hard drive data”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 11 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
On a dot matrix printer, you should never lubricate which part?
Correct Answer: Option B — printhead pins
Detailed Academic Explanation:
printhead pins is the correct answer to “On a dot matrix printer, you should never lubricate which part”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 12 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
How many devices can be used on a single SCSI bus? Keep in mind that the SCSI host adapter counts as a device.
Correct Answer: Option B — 8
Detailed Academic Explanation:
8 is the correct answer to “How many devices can be used on a single SCSI bus? Keep in mind that the SCSI host adapter counts as a device.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 13 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Match the device driver HIMEM.SYS to its operation.
Correct Answer: Option B — Manages the use of extended memory
Detailed Academic Explanation:
Manages the use of extended memory is the correct answer to “Match the device driver HIMEM.SYS to its operation.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 14 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
_____ help prevent power surges.
Correct Answer: Option A — Surge suppressor
Detailed Academic Explanation:
Surge suppressor is the correct answer to “_____ help prevent power surges.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 15 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
The digital multimeter is set for DC, Ohm and 20k. You will read _____ while measuring a good 2 amp fuse.
Correct Answer: Option A — 0
Detailed Academic Explanation:
0 is the correct answer to “The digital multimeter is set for DC, Ohm and 20k. You will read _____ while measuring a good 2 amp fuse.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 16 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
An anti static strap uses a small _____ to make sure you do not become the least path of resistance to the ground?
Correct Answer: Option D — resistor
Detailed Academic Explanation:
resistor is the correct answer to “An anti static strap uses a small _____ to make sure you do not become the least path of resistance to the ground”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 17 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
If the memory slots have 30 pins then the chip is a?
Correct Answer: Option B — SIMM
Detailed Academic Explanation:
SIMM is the correct answer to “If the memory slots have 30 pins then the chip is a”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 18 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Laser Jet printer speeds are measured in pages per minute (ppm) what do we use to measure dot-matrix printers?
Correct Answer: Option D — characters per second
Detailed Academic Explanation:
characters per second is the correct answer to “Laser Jet printer speeds are measured in pages per minute (ppm) what do we use to measure dot-matrix printers”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 19 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which values are held in CMOS for the hard drive
Correct Answer: Option A — size (heads, cylinders, sectors)
Detailed Academic Explanation:
size (heads, cylinders, sectors) is the correct answer to “Which values are held in CMOS for the hard drive”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 20 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which of the following would be a logical first step in troubleshooting a PC?
Correct Answer: Option B — Define the circumstances of the problem
Detailed Academic Explanation:
Define the circumstances of the problem is the correct answer to “Which of the following would be a logical first step in troubleshooting a PC”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 21 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which DOS driver is used to emulate expanded memory?
Correct Answer: Option B — EMM386.exe
Detailed Academic Explanation:
EMM386.exe is the correct answer to “Which DOS driver is used to emulate expanded memory”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 22 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
For a Macintosh to print successfully, the System Folder must contain:
Correct Answer: Option D — A printer driver
Detailed Academic Explanation:
A printer driver is the correct answer to “For a Macintosh to print successfully, the System Folder must contain:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 23 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which component must be vacuumed or replaced during preventative maintenance on a laser printer?
Correct Answer: Option C — Ozone filter
Detailed Academic Explanation:
Ozone filter is the correct answer to “Which component must be vacuumed or replaced during preventative maintenance on a laser printer”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 24 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which device uses a DMA channel?
Correct Answer: Option C — Sound Card
Detailed Academic Explanation:
Sound Card is the correct answer to “Which device uses a DMA channel”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 25 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
When is the risk for electrostatic discharge the greatest?
Correct Answer: Option C — Low humidity
Detailed Academic Explanation:
Low humidity is the correct answer to “When is the risk for electrostatic discharge the greatest”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 26 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
A modem could be attached to which port?
Correct Answer: Option A — Parallel port
Detailed Academic Explanation:
Parallel port is the correct answer to “A modem could be attached to which port”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 27 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What device prevents power interruptions, resulting in corrupted data?
Correct Answer: Option A — Battery back-up unit
Detailed Academic Explanation:
Battery back-up unit is the correct answer to “What device prevents power interruptions, resulting in corrupted data”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 28 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
SCSI must be terminated with?
Correct Answer: Option B — Resistor
Detailed Academic Explanation:
Resistor is the correct answer to “SCSI must be terminated with”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 29 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
In a computer with an eide adapter, where should you connect an ATA CD-ROM drive?
Correct Answer: Option C — on the secondary IDE
Detailed Academic Explanation:
on the secondary IDE is the correct answer to “In a computer with an eide adapter, where should you connect an ATA CD-ROM drive”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 30 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What's the best way to prevent damaging your PC with static electricity?
Correct Answer: Option E — wear an ESD wrist strap
Detailed Academic Explanation:
wear an ESD wrist strap is the correct answer to “What's the best way to prevent damaging your PC with static electricity”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 31 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
IRQ6 is typically reserved for:
Correct Answer: Option A — The floppy
Detailed Academic Explanation:
The floppy is the correct answer to “IRQ6 is typically reserved for:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 32 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Which would you do first when troubleshooting a faulty monitor?
Correct Answer: Option A — Check its connections to the computer and power source
Detailed Academic Explanation:
Check its connections to the computer and power source is the correct answer to “Which would you do first when troubleshooting a faulty monitor”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 33 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
To install a second IDE drive into a computer, you must:
Correct Answer: Option A — Set the master-slave jumper to slave on the second drive
Detailed Academic Explanation:
Set the master-slave jumper to slave on the second drive is the correct answer to “To install a second IDE drive into a computer, you must:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 34 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
Why does a successfully mapped network drive disappear every time you boot the computer?
Correct Answer: Option C — The map statement is not in the autoexec.bat file
Detailed Academic Explanation:
The map statement is not in the autoexec.bat file is the correct answer to “Why does a successfully mapped network drive disappear every time you boot the computer”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 35 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
What do you need to check serial and parallel port?
Correct Answer: Option C — Loopback plug
Detailed Academic Explanation:
Loopback plug is the correct answer to “What do you need to check serial and parallel port”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 36 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
You have a PC with no video* Which of the following is LEAST likely to be causing the problem?
Correct Answer: Option C — crashed hard drive
Detailed Academic Explanation:
crashed hard drive is the correct answer to “You have a PC with no video* Which of the following is LEAST likely to be causing the problem”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 37 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
To test for AC ripple on a PC power supply, you would set the volt/ohm meter for:
Correct Answer: Option B — AC voltage
Detailed Academic Explanation:
AC voltage is the correct answer to “To test for AC ripple on a PC power supply, you would set the volt/ohm meter for:”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 38 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
You get a CMOS checksum error during bootup. What is most likely the cause?
Correct Answer: Option C — CMOS battery is nearing end of life
Detailed Academic Explanation:
CMOS battery is nearing end of life is the correct answer to “You get a CMOS checksum error during bootup. What is most likely the cause”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 39 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.
Correct Answer: Option B — FALSE
Detailed Academic Explanation:
FALSE is the correct answer to “When measuring AC (Alternating Current) with a multimeter, it is important to maintain the proper polarity.”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
Question 40 of 40
★ PPSC
★ FPSC
★ PPSC
★ FPSC
After trying to unload a TSR, you get an error message saying that other TSRs were loaded after the one you tried to remove. Which of the following commands could you use to see the current load order?
Correct Answer: Option D — SYS:
Detailed Academic Explanation:
SYS: is the correct answer to “After trying to unload a TSR, you get an error message saying that other TSRs were loaded after the one you tried to remove. Which of the following commands could you use to see the current load order”. This question is standard in competitive examination syllabi for Computer Hardware.
💡Key Conceptual Anchor:Computer Hardware
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Advanced Mapreduce Concepts — Part 1
Master the next curriculum module with 40 exam-standard MCQs.
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.