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.

430
Total Questions

Practice Questions

Page 16 of 22
Question #301
The color model for monitors is:
A. CMYK subtractive
B. Grayscale only
C. RGB additive
D. Both same
Discuss
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Correct Answer: Option C

Explanation:
Red Green Blue for displays.
This question belongs to: Computer Computer Hardware
Question #302
A sheet-fed scanner is efficient for:
A. 3D objects
B. Bound books
C. Stacks of loose documents
D. Photos only
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Correct Answer: Option C

Explanation:
High throughput.
This question belongs to: Computer Computer Hardware
Question #303
What does 'TDP' stand for in CPU specs?
A. Technical Display Parameter
B. Total Data Processing
C. Thermal Design Power
D. Temporary Drive Power
Discuss
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Correct Answer: Option C

Explanation:
Indicates cooling requirements.
This question belongs to: Computer Computer Hardware
Question #304
Modern wireless mice use which frequency band?
A. Infrared
B. 2.4 GHz or Bluetooth
C. 5 GHz only
D. AM radio
Discuss
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Correct Answer: Option B

Explanation:
Low latency options available.
This question belongs to: Computer Computer Hardware
Question #305
What is the purpose of a hardware RAID controller?
A. Offload RAID processing from CPU
B. Software only
C. Print status
D. Monitor RAID
Discuss
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Correct Answer: Option A

Explanation:
Better performance.
This question belongs to: Computer Computer Hardware
Question #306
The viewing angle specification is most important for:
A. Monitors used by multiple people
B. Single user gaming
C. Printers
D. Keyboards
Discuss
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Correct Answer: Option A

Explanation:
Consistent image quality.
This question belongs to: Computer Computer Hardware
Question #307
Which memory is used for BIOS shadowing?
A. RAM copy of ROM for faster access
B. HDD
C. Cache only
D. SSD
Discuss
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Correct Answer: Option A

Explanation:
Improves boot performance.
This question belongs to: Computer Computer Hardware
Question #308
Duplex scanning refers to:
A. Two scanners
B. Scanning both sides of a page automatically
C. Double resolution
D. Color and B/W
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Correct Answer: Option B

Explanation:
Saves time.
This question belongs to: Computer Computer Hardware
Question #309
What is a 'phablet' in context of input devices?
A. Printer
B. Monitor
C. Keyboard
D. Large smartphone with stylus input
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Correct Answer: Option D

Explanation:
Hybrid device.
This question belongs to: Computer Computer Hardware
Question #310
The main reason for using error correction in storage is:
A. Reduce cost
B. Faster speed
C. Increase capacity
D. Data integrity
Discuss
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Correct Answer: Option D

Explanation:
Prevents data corruption.
This question belongs to: Computer Computer Hardware
Question #311
Gaming keyboards often feature:
A. No backlighting
B. Membrane only
C. Anti-ghosting and macro keys
D. Small size only
Discuss
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Correct Answer: Option C

Explanation:
Optimized for performance.
This question belongs to: Computer Computer Hardware
Question #312
What interface is used for high-end professional monitors?
A. DisplayPort or HDMI 2.1
B. DVI only
C. VGA
D. USB 2.0
Discuss
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Correct Answer: Option A

Explanation:
Supports high bandwidth.
This question belongs to: Computer Computer Hardware
Question #313
The actuator in HDD is responsible for:
A. Controlling power
B. Data processing
C. Spinning platters
D. Moving the read/write heads
Discuss
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Correct Answer: Option D

Explanation:
Precise positioning.
This question belongs to: Computer Computer Hardware
Question #314
Which is a disadvantage of laser printers for home use?
A. Slow speed
B. High noise
C. Higher initial cost and less suitable for photos
D. Frequent jams
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Correct Answer: Option C

Explanation:
Inkjet better for occasional color.
This question belongs to: Computer Computer Hardware
Question #315
What is 'core voltage' in CPU context?
A. Graphics voltage
B. Power supply voltage to processor cores
C. Memory voltage
D. Monitor voltage
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Correct Answer: Option B

Explanation:
Affects stability and power.
This question belongs to: Computer Computer Hardware
Question #316
A portable monitor is useful for:
A. Traveling professionals needing extra screen
B. Printing
C. Scanning
D. Home desktops
Discuss
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Correct Answer: Option A

Explanation:
USB-C powered options.
This question belongs to: Computer Computer Hardware
Question #317
The main component in a barcode system is:
A. Printer only
B. Keyboard
C. Monitor
D. Scanner and decoder
Discuss
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Correct Answer: Option D

Explanation:
Reads and interprets codes.
This question belongs to: Computer Computer Hardware
Question #318
What does 'bus width' determine?
A. Storage capacity
B. Amount of data transferred simultaneously
C. Display resolution
D. Clock speed
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Correct Answer: Option B

Explanation:
E.g., 64-bit data bus.
This question belongs to: Computer Computer Hardware
Question #319
Which feature in printers saves ink?
A. Color printing
B. Draft mode or eco mode
C. High quality mode
D. Duplex
Discuss
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Correct Answer: Option B

Explanation:
Lower resolution for drafts.
This question belongs to: Computer Computer Hardware
Question #320
The L3 cache is usually:
A. External
B. Per core only
C. Non-existent
D. Shared among cores
Discuss
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Correct Answer: Option D

Explanation:
Larger shared cache.
This question belongs to: Computer Computer Hardware

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