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.

430
Total Questions

Practice Questions

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

Explanation:
Reduces stalls.
This question belongs to: Computer Computer Hardware
Question #382
A document camera can function as a:
A. Printer
B. Digital visualizer for teaching
C. Standard scanner only
D. Mouse
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. Higher endurance and features in enterprise
B. Lower capacity
C. Higher price always same
D. Slower speed
Discuss
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Correct Answer: Option A

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. Printer feature
C. Reduces eye strain from short wavelength light
D. Increases blue colors
Discuss
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Correct Answer: Option C

Explanation:
Health feature.
This question belongs to: Computer Computer Hardware
Question #385
Which input device uses Hall effect sensors?
A. Scanners
B. Some mechanical keyboards for durability
C. Optical mice
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. Latency
B. Bus width and clock speed
C. Voltage
D. Capacity only
Discuss
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Correct Answer: Option B

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

Explanation:
Troubleshooting.
This question belongs to: Computer Computer Hardware
Question #388
High PPI (pixels per inch) in monitors provides:
A. Lower resolution
B. Sharper images
C. Larger size
D. Higher power use always
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. VGA
B. USB 3.2 or Thunderbolt
C. Parallel port
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. Queue of print jobs
B. Ink levels
C. Paper feed
D. Scanner input
Discuss
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Correct Answer: Option A

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

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

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

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

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

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

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. Translation Lookaside Buffer for virtual memory
C. Thermal Limit Buffer
D. Display Buffer
Discuss
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Correct Answer: Option B

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

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

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

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

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