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.

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Total Questions

Practice Questions

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

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. Reduce functionality
D. Increase price
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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. DVI-D
D. HDMI ARC only
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. RPM (Revolutions Per Minute)
D. GHz
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Correct Answer: Option C

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. Audio Digital Filter
B. Automatic Duplex Function
C. Advanced Data Format
D. Automatic Document Feeder
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Correct Answer: Option D

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

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

Explanation:
Improves performance.
This question belongs to: Computer Computer Hardware
Question #329
Which is a contactless input technology?
A. Trackball
B. Membrane keyboard
C. Mechanical switches
D. RFID and NFC
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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. External chip
B. In RAM
C. On motherboard only
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. Feed paper
B. Bond toner to paper with heat and pressure
C. Scan documents
D. Store ink
Discuss
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Correct Answer: Option B

Explanation:
In laser printers.
This question belongs to: Computer Computer Hardware
Question #332
Wide color gamut monitors support:
A. sRGB only
B. DCI-P3 or Adobe RGB
C. Mono audio
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. Replacing monitor
C. Updating BIOS always
D. Checking connections and drivers
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Correct Answer: Option D

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

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

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

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

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. CPU temperatures rise abnormally
D. Monitor flickers
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Correct Answer: Option C

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

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

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

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