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. Printer speed
B. Display quality
C. Memory size
D. CPU pipeline efficiency
Discuss
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Correct Answer: Option D

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

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. Reduces eye strain from short wavelength light
B. Printer feature
C. For night mode only
D. Increases blue colors
Discuss
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Correct Answer: Option A

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

Explanation:
Troubleshooting.
This question belongs to: Computer Computer Hardware
Question #388
High PPI (pixels per inch) in monitors provides:
A. Higher power use always
B. Sharper images
C. Larger size
D. Lower resolution
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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. VGA
C. USB 3.2 or Thunderbolt
D. PS/2
Discuss
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Correct Answer: Option C

Explanation:
Fast data transfer.
This question belongs to: Computer Computer Hardware
Question #390
The print spooler manages:
A. Scanner input
B. Queue of print jobs
C. Paper feed
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. Memory only
B. Display instruction
C. Single Instruction Multiple Data for parallel processing
D. Serial processing
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Correct Answer: Option C

Explanation:
Vector processing.
This question belongs to: Computer Computer Hardware
Question #392
Which scanner is used for slides and negatives?
A. Sheet fed
B. Flatbed standard
C. Film scanner or dedicated transparency scanner
D. Handheld
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. Monitor size
B. Printer type
C. Keyboard switches
D. Appropriate cooling solution
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Correct Answer: Option D

Explanation:
Thermal management.
This question belongs to: Computer Computer Hardware
Question #394
What feature do ergonomic mice have?
A. Small size
B. No buttons
C. Wired only
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. Higher latency
C. Less capacity
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. USB only to one PC
B. Serial cable
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. Thermal Limit Buffer
C. Display 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. Difference between brightest and darkest
B. Resolution
C. Color count
D. Refresh rate
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. Security through unique traits
B. Display quality
C. Printing speed
D. Cooling
Discuss
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Correct Answer: Option A

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