Computer Hardware MCQs

Computer

Computer Hardware MCQs

Practice Computer Hardware MCQs with answers and detailed explanations covering input devices, output devices, scanners, printers, keyboards, monitors and computer hardware components frequently asked in competitive examinations.

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Total Questions

Practice Questions

Page 20 of 22
Question #381
Branch prediction accuracy affects:
A. CPU pipeline efficiency
B. Printer speed
C. Display quality
D. Memory size
Discuss
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Correct Answer: Option A

Explanation:
Reduces stalls.
This question belongs to: Computer Computer Hardware
Question #382
A document camera can function as a:
A. Mouse
B. Digital visualizer for teaching
C. Standard scanner only
D. Printer
Discuss
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Correct Answer: Option B

Explanation:
Real-time projection.
This question belongs to: Computer Computer Hardware
Question #383
The main difference between consumer and enterprise SSDs is:
A. Lower capacity
B. Slower speed
C. Higher price always same
D. Higher endurance and features in enterprise
Discuss
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Correct Answer: Option D

Explanation:
For heavy workloads.
This question belongs to: Computer Computer Hardware
Question #384
What is blue light filter in monitors?
A. For night mode only
B. Reduces eye strain from short wavelength light
C. Printer feature
D. Increases blue colors
Discuss
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Correct Answer: Option B

Explanation:
Health feature.
This question belongs to: Computer Computer Hardware
Question #385
Which input device uses Hall effect sensors?
A. Optical mice
B. Some mechanical keyboards for durability
C. Scanners
D. Monitors
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Correct Answer: Option B

Explanation:
Contactless switching.
This question belongs to: Computer Computer Hardware
Question #386
The memory bandwidth is determined by:
A. Voltage
B. Capacity only
C. Latency
D. Bus width and clock speed
Discuss
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Correct Answer: Option D

Explanation:
Data transfer rate.
This question belongs to: Computer Computer Hardware
Question #387
What is the use of a continuity tester in hardware?
A. Checking cables and connections
B. Monitor test
C. Printing test
D. Scanning test
Discuss
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Correct Answer: Option A

Explanation:
Troubleshooting.
This question belongs to: Computer Computer Hardware
Question #388
High PPI (pixels per inch) in monitors provides:
A. Larger size
B. Sharper images
C. Higher power use always
D. Lower resolution
Discuss
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Correct Answer: Option B

Explanation:
Retina-like displays.
This question belongs to: Computer Computer Hardware
Question #389
A common interface for external storage is:
A. Parallel port
B. USB 3.2 or Thunderbolt
C. VGA
D. PS/2
Discuss
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Correct Answer: Option B

Explanation:
Fast data transfer.
This question belongs to: Computer Computer Hardware
Question #390
The print spooler manages:
A. Paper feed
B. Queue of print jobs
C. Scanner input
D. Ink levels
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Correct Answer: Option B

Explanation:
Background processing.
This question belongs to: Computer Computer Hardware
Question #391
What is SIMD in CPU architecture?
A. Single Instruction Multiple Data for parallel processing
B. Memory only
C. Display instruction
D. Serial processing
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Correct Answer: Option A

Explanation:
Vector processing.
This question belongs to: Computer Computer Hardware
Question #392
Which scanner is used for slides and negatives?
A. Film scanner or dedicated transparency scanner
B. Sheet fed
C. Flatbed standard
D. Handheld
Discuss
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Correct Answer: Option A

Explanation:
High resolution for film.
This question belongs to: Computer Computer Hardware
Question #393
The TDP rating helps in selecting:
A. Monitor size
B. Appropriate cooling solution
C. Printer type
D. Keyboard switches
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Correct Answer: Option B

Explanation:
Thermal management.
This question belongs to: Computer Computer Hardware
Question #394
What feature do ergonomic mice have?
A. No buttons
B. Wired only
C. Small size
D. Vertical design for natural grip
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Correct Answer: Option D

Explanation:
Reduces wrist strain.
This question belongs to: Computer Computer Hardware
Question #395
The main advantage of DDR RAM over SDR is:
A. Double data rate for higher bandwidth
B. Less capacity
C. Higher latency
D. Lower speed
Discuss
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Correct Answer: Option A

Explanation:
Performance improvement.
This question belongs to: Computer Computer Hardware
Question #396
A network printer can be shared via:
A. Serial cable
B. USB only to one PC
C. Parallel
D. Ethernet or Wi-Fi
Discuss
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Correct Answer: Option D

Explanation:
Office environments.
This question belongs to: Computer Computer Hardware
Question #397
What is the function of TLB in CPU?
A. Text Layout Buffer
B. Display Buffer
C. Thermal Limit Buffer
D. Translation Lookaside Buffer for virtual memory
Discuss
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Correct Answer: Option D

Explanation:
Faster address translation.
This question belongs to: Computer Computer Hardware
Question #398
The contrast ratio in monitors indicates:
A. Refresh rate
B. Resolution
C. Difference between brightest and darkest
D. Color count
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Correct Answer: Option C

Explanation:
Higher is better for depth.
This question belongs to: Computer Computer Hardware
Question #399
Biometric input devices enhance:
A. Display quality
B. Cooling
C. Security through unique traits
D. Printing speed
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Correct Answer: Option C

Explanation:
Fingerprint, face, iris etc.
This question belongs to: Computer Computer Hardware
Question #400
What is the typical access time for modern SSDs?
A. Microseconds
B. Milliseconds like HDD
C. Minutes
D. Seconds
Discuss
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Correct Answer: Option A

Explanation:
Much faster than HDD.
This question belongs to: Computer Computer Hardware

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