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.

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Total Questions

Practice Questions

Page 18 of 22
Question #341
The ink level monitoring in printers uses:
A. Manual check only
B. Sensors or software estimation
C. Weight measurement
D. Color detection
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Correct Answer: Option B

Explanation:
Alerts users.
This question belongs to: Computer Computer Hardware
Question #342
Which input device is essential for accessibility?
A. Special keyboards, mice, or voice recognition
B. Laser printers
C. High-end monitors
D. Standard only
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Correct Answer: Option A

Explanation:
For users with disabilities.
This question belongs to: Computer Computer Hardware
Question #343
What is the advantage of M.2 SSD form factor?
A. Higher power use
B. Large physical size
C. Compact size and high speed
D. Slower than SATA
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Correct Answer: Option C

Explanation:
Ideal for thin devices.
This question belongs to: Computer Computer Hardware
Question #344
Flicker-free technology in monitors reduces:
A. Resolution
B. Brightness
C. Contrast
D. Eye strain by eliminating PWM flicker
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Correct Answer: Option D

Explanation:
Better for health.
This question belongs to: Computer Computer Hardware
Question #345
A MICR reader is specialized for:
A. Barcodes
B. Photos
C. Banking cheques
D. General documents
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Correct Answer: Option C

Explanation:
Magnetic ink characters.
This question belongs to: Computer Computer Hardware
Question #346
The integrated graphics in CPU shares:
A. System RAM
B. Dedicated VRAM
C. HDD space
D. No memory
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Correct Answer: Option A

Explanation:
For cost-effective setups.
This question belongs to: Computer Computer Hardware
Question #347
What is the purpose of a calibration report for monitors?
A. Size measurement
B. Power consumption
C. Factory or user verified color accuracy
D. Speed test
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Correct Answer: Option C

Explanation:
Professional use.
This question belongs to: Computer Computer Hardware
Question #348
Which technology allows printers to connect via mobile apps?
A. Wi-Fi Direct or cloud services
B. Parallel cable
C. Serial
D. USB only
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Correct Answer: Option A

Explanation:
Modern convenience.
This question belongs to: Computer Computer Hardware
Question #349
The pipeline in CPU refers to:
A. Graphics pipeline
B. Memory pipeline
C. Instruction processing stages
D. Power pipeline
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Correct Answer: Option C

Explanation:
Superscalar architecture.
This question belongs to: Computer Computer Hardware
Question #350
A handheld scanner is best for:
A. Photo negatives
B. Scanning irregular or large objects
C. High quality flat documents
D. Batch processing
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Correct Answer: Option B

Explanation:
Flexibility.
This question belongs to: Computer Computer Hardware
Question #351
What is 'power gating' in processors?
A. Shutting off unused parts to save power
B. Increasing voltage
C. Memory management
D. Display control
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Correct Answer: Option A

Explanation:
Energy efficiency.
This question belongs to: Computer Computer Hardware
Question #352
The standard color depth for high-quality monitors is:
A. 4-bit
B. 8-bit or 10-bit per channel
C. 1-bit
D. 2-bit
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Correct Answer: Option B

Explanation:
Millions of colors.
This question belongs to: Computer Computer Hardware
Question #353
Which device is used for signature capture?
A. Standard mouse
B. Electronic signature pad
C. Keyboard
D. Scanner
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Correct Answer: Option B

Explanation:
Digital transactions.
This question belongs to: Computer Computer Hardware
Question #354
What causes coil whine in hardware?
A. Monitor issue
B. Printer motor
C. Keyboard switches
D. Vibrations in inductors under load
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Correct Answer: Option D

Explanation:
Common in GPUs/PSUs.
This question belongs to: Computer Computer Hardware
Question #355
The main benefit of 32GB+ RAM is:
A. Scanning
B. Basic web browsing
C. Printing
D. Heavy multitasking and content creation
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Correct Answer: Option D

Explanation:
Future-proofing.
This question belongs to: Computer Computer Hardware
Question #356
What is the function of a print head in inkjet?
A. Eject ink droplets
B. Feed paper
C. Heat toner
D. Scan image
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Correct Answer: Option A

Explanation:
Core printing mechanism.
This question belongs to: Computer Computer Hardware
Question #357
FreeSync and G-Sync are technologies for:
A. Power saving
B. Adaptive refresh rate synchronization
C. Color management
D. Input lag reduction only
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Correct Answer: Option B

Explanation:
Smooth gaming experience.
This question belongs to: Computer Computer Hardware
Question #358
A trackpoint is found in:
A. Some laptop keyboards
B. Printers
C. Monitors
D. Desktops only
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Correct Answer: Option A

Explanation:
Pointing stick for navigation.
This question belongs to: Computer Computer Hardware
Question #359
What does 'silicon lottery' refer to in hardware?
A. Variation in CPU overclocking potential
B. RAM quality
C. Monitor lottery
D. Printer luck
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Correct Answer: Option A

Explanation:
Manufacturing differences.
This question belongs to: Computer Computer Hardware
Question #360
The best way to clean a keyboard is:
A. Water wash
B. Compressed air and isopropyl alcohol carefully
C. Vacuum only
D. No cleaning
Discuss
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Correct Answer: Option B

Explanation:
Prevents damage.
This question belongs to: Computer Computer Hardware

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