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 11 of 22
Question #201
GDDR memory is specialized for:
A. System RAM
B. Storage drives
C. Printer buffers
D. Graphics cards
Discuss
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Correct Answer: Option D

Explanation:
Graphics Double Data Rate.
This question belongs to: Computer Computer Hardware
Question #202
The standard interface for modern hard drives is:
A. SATA or NVMe
B. SCSI only
C. Parallel port
D. IDE only
Discuss
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Correct Answer: Option A

Explanation:
SATA for HDDs, NVMe for SSDs.
This question belongs to: Computer Computer Hardware
Question #203
What causes dead pixels in monitors?
A. High usage
B. Manufacturing defect in LCD pixels
C. Low brightness
D. Wrong cable
Discuss
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Correct Answer: Option B

Explanation:
Non-functional sub-pixels.
This question belongs to: Computer Computer Hardware
Question #204
Which is an advanced input device for virtual reality?
A. Barcode scanner
B. Optical mouse
C. Motion controllers
D. Standard keyboard
Discuss
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Correct Answer: Option C

Explanation:
Tracks hand movements.
This question belongs to: Computer Computer Hardware
Question #205
What is the benefit of modular power supplies?
A. Lower cost always
B. Slower power delivery
C. Better cable management and efficiency
D. No difference
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Correct Answer: Option C

Explanation:
Reduces clutter in PC cases.
This question belongs to: Computer Computer Hardware
Question #206
OCR accuracy depends on:
A. Keyboard layout
B. Printer speed
C. Monitor size
D. Scan quality and font clarity
Discuss
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Correct Answer: Option D

Explanation:
Better input leads to better recognition.
This question belongs to: Computer Computer Hardware
Question #207
Which hardware supports hardware-accelerated video encoding?
A. Printers
B. Scanners
C. Modern GPUs
D. Keyboards
Discuss
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Correct Answer: Option C

Explanation:
Quick Sync, NVENC etc.
This question belongs to: Computer Computer Hardware
Question #208
The form factor for small PCs is often:
A. XL-ATX
B. Full tower
C. Mini-ITX
D. E-ATX
Discuss
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Correct Answer: Option C

Explanation:
Compact builds.
This question belongs to: Computer Computer Hardware
Question #209
What is the purpose of a calibration tool for monitors?
A. Increase resolution
B. Accurate colors and brightness
C. Reduce weight
D. Speed up refresh rate
Discuss
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Correct Answer: Option B

Explanation:
For photographers and designers.
This question belongs to: Computer Computer Hardware
Question #210
Which device uses stepper motors for movement?
A. LED monitors
B. RAM modules
C. Dot matrix printers and scanners
D. CPUs
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Correct Answer: Option C

Explanation:
Precise mechanical positioning.
This question belongs to: Computer Computer Hardware
Question #211
What is 'branch prediction' in CPU?
A. Graphics rendering
B. Technique to improve instruction execution speed
C. Power management
D. Memory storage method
Discuss
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Correct Answer: Option B

Explanation:
Advanced CPU feature.
This question belongs to: Computer Computer Hardware
Question #212
A daisy chain connection is used for:
A. Connecting multiple devices in series like Thunderbolt
B. Printing only
C. Keyboard input
D. Scanning
Discuss
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Correct Answer: Option A

Explanation:
Efficient cabling.
This question belongs to: Computer Computer Hardware
Question #213
Which memory type is non-volatile and used for firmware?
A. SRAM
B. DRAM
C. Flash memory
D. EDO RAM
Discuss
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Correct Answer: Option C

Explanation:
Retains data without power.
This question belongs to: Computer Computer Hardware
Question #214
The main reason for using multiple fans in a PC case is:
A. Power saving
B. Aesthetics only
C. Improved airflow and cooling
D. Noise reduction
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Correct Answer: Option C

Explanation:
Prevents thermal throttling.
This question belongs to: Computer Computer Hardware
Question #215
What does 'anisotropic filtering' improve in graphics?
A. Texture quality at angles
B. CPU performance
C. RAM speed
D. Monitor brightness
Discuss
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Correct Answer: Option A

Explanation:
GPU feature for better visuals.
This question belongs to: Computer Computer Hardware
Question #216
Portable document scanners are useful for:
A. 3D printing
B. Mobile professionals needing quick digitization
C. Photo editing
D. High volume office only
Discuss
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Correct Answer: Option B

Explanation:
Compact and battery powered options exist.
This question belongs to: Computer Computer Hardware
Question #217
Which interface has replaced Parallel ATA?
A. SCSI
B. USB 1.0
C. Serial ATA (SATA)
D. IDE
Discuss
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Correct Answer: Option C

Explanation:
Faster and more reliable.
This question belongs to: Computer Computer Hardware
Question #218
What is ghosting in the context of keyboards?
A. Mouse lag
B. Monitor issue
C. Printer smearing
D. Multiple unintended key presses
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Correct Answer: Option D

Explanation:
NKRO (n-key rollover) prevents it.
This question belongs to: Computer Computer Hardware
Question #219
The socket type for AMD processors often uses:
A. VGA
B. PGA or LGA variants
C. Only USB
D. HDMI
Discuss
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Correct Answer: Option B

Explanation:
Pin Grid Array or Land Grid Array.
This question belongs to: Computer Computer Hardware
Question #220
What technology allows printers to print without a computer?
A. USB only
B. Parallel port
C. Serial port
D. Cloud printing or direct Wi-Fi
Discuss
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Correct Answer: Option D

Explanation:
Modern smart printers support it.
This question belongs to: Computer Computer Hardware

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