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

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

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. Slower than SATA
B. Higher power use
C. Large physical size
D. Compact size and high speed
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Correct Answer: Option D

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

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

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

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. Power consumption
B. Factory or user verified color accuracy
C. Size measurement
D. Speed test
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Correct Answer: Option B

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

Explanation:
Modern convenience.
This question belongs to: Computer Computer Hardware
Question #349
The pipeline in CPU refers to:
A. Power pipeline
B. Memory pipeline
C. Instruction processing stages
D. Graphics 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. High quality flat documents
B. Scanning irregular or large objects
C. Batch processing
D. Photo negatives
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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. Increasing voltage
B. Shutting off unused parts to save power
C. Memory management
D. Display control
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Correct Answer: Option B

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

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

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

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

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

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

Explanation:
Smooth gaming experience.
This question belongs to: Computer Computer Hardware
Question #358
A trackpoint is found in:
A. Some laptop keyboards
B. Desktops only
C. Monitors
D. Printers
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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. Monitor lottery
B. Printer luck
C. RAM quality
D. Variation in CPU overclocking potential
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Correct Answer: Option D

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

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

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