Computer Hardware MCQs with Answers and Explanations

Question #201

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GDDR memory is specialized for:

A. System RAM

B. Graphics cards

C. Storage drives

D. Printer buffers

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Correct Answer: Option B

Explanation:
Graphics Double Data Rate.

This question belongs to: Computer Computer Hardware

Question #202

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The standard interface for modern hard drives is:

A. IDE only

B. SATA or NVMe

C. SCSI only

D. Parallel port

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Correct Answer: Option B

Explanation:
SATA for HDDs, NVMe for SSDs.

This question belongs to: Computer Computer Hardware

Question #203

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What causes dead pixels in monitors?

A. High usage

B. Manufacturing defect in LCD pixels

C. Low brightness

D. Wrong cable

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Correct Answer: Option B

Explanation:
Non-functional sub-pixels.

This question belongs to: Computer Computer Hardware

Question #204

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Which is an advanced input device for virtual reality?

A. Standard keyboard

B. Optical mouse

C. Motion controllers

D. Barcode scanner

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Correct Answer: Option C

Explanation:
Tracks hand movements.

This question belongs to: Computer Computer Hardware

Question #205

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What is the benefit of modular power supplies?

A. Lower cost always

B. No difference

C. Slower power delivery

D. Better cable management and efficiency

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Correct Answer: Option D

Explanation:
Reduces clutter in PC cases.

This question belongs to: Computer Computer Hardware

Question #206

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OCR accuracy depends on:

A. Scan quality and font clarity

B. Monitor size

C. Keyboard layout

D. Printer speed

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Correct Answer: Option A

Explanation:
Better input leads to better recognition.

This question belongs to: Computer Computer Hardware

Question #207

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Which hardware supports hardware-accelerated video encoding?

A. Scanners

B. Keyboards

C. Modern GPUs

D. Printers

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Correct Answer: Option C

Explanation:
Quick Sync, NVENC etc.

This question belongs to: Computer Computer Hardware

Question #208

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The form factor for small PCs is often:

A. Mini-ITX

B. Full tower

C. XL-ATX

D. E-ATX

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Correct Answer: Option A

Explanation:
Compact builds.

This question belongs to: Computer Computer Hardware

Question #209

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What is the purpose of a calibration tool for monitors?

A. Speed up refresh rate

B. Increase resolution

C. Accurate colors and brightness

D. Reduce weight

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Correct Answer: Option C

Explanation:
For photographers and designers.

This question belongs to: Computer Computer Hardware

Question #210

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Which device uses stepper motors for movement?

A. Dot matrix printers and scanners

B. LED monitors

C. RAM modules

D. CPUs

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Correct Answer: Option A

Explanation:
Precise mechanical positioning.

This question belongs to: Computer Computer Hardware

Question #211

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What is 'branch prediction' in CPU?

A. Technique to improve instruction execution speed

B. Graphics rendering

C. Memory storage method

D. Power management

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Correct Answer: Option A

Explanation:
Advanced CPU feature.

This question belongs to: Computer Computer Hardware

Question #212

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A daisy chain connection is used for:

A. Connecting multiple devices in series like Thunderbolt

B. Scanning

C. Printing only

D. Keyboard input

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Correct Answer: Option A

Explanation:
Efficient cabling.

This question belongs to: Computer Computer Hardware

Question #213

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Which memory type is non-volatile and used for firmware?

A. EDO RAM

B. SRAM

C. Flash memory

D. DRAM

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Correct Answer: Option C

Explanation:
Retains data without power.

This question belongs to: Computer Computer Hardware

Question #214

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The main reason for using multiple fans in a PC case is:

A. Power saving

B. Improved airflow and cooling

C. Aesthetics only

D. Noise reduction

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Correct Answer: Option B

Explanation:
Prevents thermal throttling.

This question belongs to: Computer Computer Hardware

Question #215

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What does 'anisotropic filtering' improve in graphics?

A. CPU performance

B. Monitor brightness

C. Texture quality at angles

D. RAM speed

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Correct Answer: Option C

Explanation:
GPU feature for better visuals.

This question belongs to: Computer Computer Hardware

Question #216

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Portable document scanners are useful for:

A. High volume office only

B. Photo editing

C. 3D printing

D. Mobile professionals needing quick digitization

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Correct Answer: Option D

Explanation:
Compact and battery powered options exist.

This question belongs to: Computer Computer Hardware

Question #217

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Which interface has replaced Parallel ATA?

A. SCSI

B. IDE

C. Serial ATA (SATA)

D. USB 1.0

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Correct Answer: Option C

Explanation:
Faster and more reliable.

This question belongs to: Computer Computer Hardware

Question #218

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What is ghosting in the context of keyboards?

A. Monitor issue

B. Multiple unintended key presses

C. Printer smearing

D. Mouse lag

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Correct Answer: Option B

Explanation:
NKRO (n-key rollover) prevents it.

This question belongs to: Computer Computer Hardware

Question #219

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The socket type for AMD processors often uses:

A. VGA

B. PGA or LGA variants

C. Only USB

D. HDMI

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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

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What technology allows printers to print without a computer?

A. Cloud printing or direct Wi-Fi

B. Serial port

C. USB only

D. Parallel port

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Correct Answer: Option A

Explanation:
Modern smart printers support it.

This question belongs to: Computer Computer Hardware

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