Computer Hardware MCQs

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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 17 of 22
Question #321
What is the primary sensor in most flatbed scanners?
A. CCD or CIS
B. Magnetic
C. CMOS only for phones
D. Thermal
Discuss
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Correct Answer: Option A

Explanation:
Charge Coupled Device or Contact Image Sensor.
This question belongs to: Computer Computer Hardware
Question #322
Ergonomic design in hardware aims to:
A. Improve comfort and reduce health risks
B. Limit customization
C. Increase price
D. Reduce functionality
Discuss
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Correct Answer: Option A

Explanation:
Long-term user health.
This question belongs to: Computer Computer Hardware
Question #323
Which connection type supports daisy chaining multiple monitors?
A. DisplayPort
B. VGA
C. HDMI ARC only
D. DVI-D
Discuss
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Correct Answer: Option A

Explanation:
MST support.
This question belongs to: Computer Computer Hardware
Question #324
The spinning speed of HDD is measured in:
A. DPI
B. MB/s
C. GHz
D. RPM (Revolutions Per Minute)
Discuss
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Correct Answer: Option D

Explanation:
5400 or 7200 RPM common.
This question belongs to: Computer Computer Hardware
Question #325
A all-in-one printer's ADF stands for:
A. Automatic Document Feeder
B. Automatic Duplex Function
C. Advanced Data Format
D. Audio Digital Filter
Discuss
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Correct Answer: Option A

Explanation:
For automatic multi-page handling.
This question belongs to: Computer Computer Hardware
Question #326
What is 'threading' in CPU terms?
A. Physical cores
B. Display threads
C. Simultaneous multithreading for efficiency
D. Memory threads
Discuss
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Correct Answer: Option C

Explanation:
Like hyper-threading.
This question belongs to: Computer Computer Hardware
Question #327
The best surface for optical mouse is:
A. Glass
B. Matte non-reflective
C. Shiny
D. Mirror
Discuss
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Correct Answer: Option B

Explanation:
Consistent tracking.
This question belongs to: Computer Computer Hardware
Question #328
What does firmware update for monitors typically fix?
A. Power supply
B. Physical damage
C. Hardware failure
D. Compatibility, bugs, and features
Discuss
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Correct Answer: Option D

Explanation:
Improves performance.
This question belongs to: Computer Computer Hardware
Question #329
Which is a contactless input technology?
A. Membrane keyboard
B. Mechanical switches
C. Trackball
D. RFID and NFC
Discuss
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Correct Answer: Option D

Explanation:
Proximity reading.
This question belongs to: Computer Computer Hardware
Question #330
The memory controller in modern CPUs is often:
A. In RAM
B. On motherboard only
C. External chip
D. Integrated in the processor
Discuss
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Correct Answer: Option D

Explanation:
Reduces latency.
This question belongs to: Computer Computer Hardware
Question #331
What is the purpose of a printer's fuser unit?
A. Store ink
B. Feed paper
C. Scan documents
D. Bond toner to paper with heat and pressure
Discuss
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Correct Answer: Option D

Explanation:
In laser printers.
This question belongs to: Computer Computer Hardware
Question #332
Wide color gamut monitors support:
A. Mono audio
B. DCI-P3 or Adobe RGB
C. sRGB only
D. Grayscale
Discuss
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Correct Answer: Option B

Explanation:
For professional content creation.
This question belongs to: Computer Computer Hardware
Question #333
A common troubleshooting step for input devices is:
A. Reformatting HDD
B. Checking connections and drivers
C. Updating BIOS always
D. Replacing monitor
Discuss
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Correct Answer: Option B

Explanation:
Basic diagnostics.
This question belongs to: Computer Computer Hardware
Question #334
What is the role of capacitors on motherboards?
A. Processing
B. Voltage stabilization and filtering
C. Data storage
D. Display
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Correct Answer: Option B

Explanation:
Power delivery quality.
This question belongs to: Computer Computer Hardware
Question #335
Which scanner resolution is sufficient for text documents?
A. 50 DPI
B. 1200 DPI only
C. 300 DPI
D. 100 DPI
Discuss
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Correct Answer: Option C

Explanation:
Balance of quality and file size.
This question belongs to: Computer Computer Hardware
Question #336
The term 'die shrink' refers to:
A. Keyboard layout
B. Monitor size reduction
C. Printer head
D. Reducing CPU manufacturing process size
Discuss
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Correct Answer: Option D

Explanation:
Improves efficiency.
This question belongs to: Computer Computer Hardware
Question #337
What feature allows seamless transition between laptop and external monitor?
A. Fixed setup only
B. Reboot required
C. Hot plugging and display switching
D. Cable change only
Discuss
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Correct Answer: Option C

Explanation:
Modern OS support.
This question belongs to: Computer Computer Hardware
Question #338
Thermal paste replacement is needed when:
A. Printer jams
B. Mouse stops
C. Monitor flickers
D. CPU temperatures rise abnormally
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Correct Answer: Option D

Explanation:
Dries out over time.
This question belongs to: Computer Computer Hardware
Question #339
A vector monitor or plotter excels in:
A. Line drawings and CAD
B. Audio
C. Photographs
D. Text documents
Discuss
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Correct Answer: Option A

Explanation:
Precision over raster.
This question belongs to: Computer Computer Hardware
Question #340
What is 'out of order execution' in modern CPUs?
A. Memory management
B. Sequential only
C. Reordering instructions for efficiency
D. Graphics only
Discuss
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Correct Answer: Option C

Explanation:
Performance optimization.
This question belongs to: Computer Computer Hardware

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