Computer Hardware MCQs with Answers and Explanations

Question #221

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Which component's failure can cause no display on monitor?

A. Keyboard

B. Hard disk

C. Graphics card or RAM

D. Mouse

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Correct Answer: Option C

Explanation:
Common troubleshooting issue.

This question belongs to: Computer Computer Hardware

Question #222

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What is the standard for high dynamic range in monitors?

A. SD only

B. HDR10 or Dolby Vision

C. VGA

D. NTSC

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Correct Answer: Option B

Explanation:
Better contrast and colors.

This question belongs to: Computer Computer Hardware

Question #223

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A stylus is primarily an input device for:

A. Scanning

B. Audio

C. Precise pointing on touchscreens

D. Printing

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Correct Answer: Option C

Explanation:
Used in drawing and note-taking.

This question belongs to: Computer Computer Hardware

Question #224

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What does 'MTBF' indicate for hardware?

A. Memory Transfer Buffer Format

B. Monitor Test Benchmark Frequency

C. Mean Time Between Failures, reliability measure

D. Maximum Thermal Buffer Factor

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Correct Answer: Option C

Explanation:
Indicates expected lifespan.

This question belongs to: Computer Computer Hardware

Question #225

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Which type of printer is most economical for high volume black text?

A. Laser printer

B. Thermal

C. Inkjet

D. Dot matrix

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Correct Answer: Option A

Explanation:
Low cost per page.

This question belongs to: Computer Computer Hardware

Question #226

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The PCIe lanes are used for:

A. Audio

B. Low speed peripherals

C. High bandwidth connections to GPU and SSDs

D. Power only

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Correct Answer: Option C

Explanation:
Scalable high-speed interface.

This question belongs to: Computer Computer Hardware

Question #227

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What feature do gaming monitors often have for low latency?

A. Built-in scanner

B. High refresh rate and low response time

C. High DPI

D. Large size only

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Correct Answer: Option B

Explanation:
1ms response time is common.

This question belongs to: Computer Computer Hardware

Question #228

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Which hardware component uses quantum tunneling in some advanced versions?

A. Monitor pixels

B. Flash memory cells

C. Printer nozzles

D. CPU transistors traditionally

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Correct Answer: Option B

Explanation:
In NAND flash.

This question belongs to: Computer Computer Hardware

Question #229

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A docking station primarily allows laptops to:

A. Increase internal RAM

B. Connect multiple peripherals easily

C. Print faster

D. Scan documents

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Correct Answer: Option B

Explanation:
Turns laptop into desktop setup.

This question belongs to: Computer Computer Hardware

Question #230

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What is the typical power consumption of an idle modern monitor?

A. Negligible only

B. 500W

C. 1000W

D. Low, around 20-50W

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Correct Answer: Option D

Explanation:
Energy efficient designs.

This question belongs to: Computer Computer Hardware

Question #231

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The main advantage of vector graphics output in plotters is:

A. Scalability without loss of quality

B. Fast text

C. Color photos

D. Low cost

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Correct Answer: Option A

Explanation:
Precise lines for technical drawings.

This question belongs to: Computer Computer Hardware

Question #232

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Which bus architecture is used in modern motherboards?

A. ISA

B. EISA

C. PCI Express

D. MCA

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Correct Answer: Option C

Explanation:
High speed serial communication.

This question belongs to: Computer Computer Hardware

Question #233

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What causes image retention in OLED monitors?

A. Low resolution

B. Wrong cable

C. Static images over long periods

D. High brightness only

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Correct Answer: Option C

Explanation:
Pixel wear issue mitigated by features.

This question belongs to: Computer Computer Hardware

Question #234

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A fingerprint sensor is an example of:

A. Storage device

B. Output device

C. Biometric input device

D. Processing unit

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Correct Answer: Option C

Explanation:
For security authentication.

This question belongs to: Computer Computer Hardware

Question #235

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What is the role of a southbridge chipset?

A. I/O and slower peripherals management

B. CPU and RAM connection

C. Graphics acceleration

D. Cooling control

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Correct Answer: Option A

Explanation:
Legacy and peripheral support.

This question belongs to: Computer Computer Hardware

Question #236

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Modern keyboards often feature:

A. Fixed layout only

B. Only mechanical

C. No keys

D. RGB backlighting and programmable keys

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Correct Answer: Option D

Explanation:
Customization for gamers and professionals.

This question belongs to: Computer Computer Hardware

Question #237

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The term 'seek time' is associated with:

A. RAM access

B. Traditional HDD performance

C. Monitor refresh

D. Printer speed

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Correct Answer: Option B

Explanation:
Time to position read/write head.

This question belongs to: Computer Computer Hardware

Question #238

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Which output device is used in education for large audiences?

A. Headphones

B. Personal printer

C. Small monitor

D. Interactive whiteboard or projector

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Correct Answer: Option D

Explanation:
Collaborative learning tools.

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Question #239

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What is a key characteristic of SRAM?

A. High capacity only

B. Non-volatile

C. Faster but more expensive than DRAM

D. Cheaper and slower

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Correct Answer: Option C

Explanation:
Used in CPU cache.

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Question #240

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Wi-Fi enabled printers allow:

A. Lower quality

B. Printing from mobile devices without cables

C. Scanning only

D. No connectivity

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Correct Answer: Option B

Explanation:
Convenience in modern setups.

This question belongs to: Computer Computer Hardware

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