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

Explanation:
Red Green Blue for displays.
This question belongs to: Computer Computer Hardware
Question #302
A sheet-fed scanner is efficient for:
A. Bound books
B. Photos only
C. Stacks of loose documents
D. 3D objects
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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. Temporary Drive Power
B. Technical Display Parameter
C. Thermal Design Power
D. Total Data Processing
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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. AM radio
B. 5 GHz only
C. Infrared
D. 2.4 GHz or Bluetooth
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Correct Answer: Option D

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. Monitor RAID
C. Print status
D. Software only
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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. Keyboards
B. Monitors used by multiple people
C. Single user gaming
D. Printers
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Correct Answer: Option B

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

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

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

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

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

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

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

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. Monitor voltage
D. Memory 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. Home desktops
B. Traveling professionals needing extra screen
C. Printing
D. Scanning
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Correct Answer: Option B

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

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

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

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

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