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.
Question #81
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Which device is used in ATMs for card reading?
Correct Answer: Option B
Explanation:
Magnetic stripe readers read card data.
Magnetic stripe readers read card data.
This question belongs to:
Computer
Computer Hardware
Question #82
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L1, L2, L3 refer to levels of:
Correct Answer: Option B
Explanation:
Multi-level cache in modern CPUs.
Multi-level cache in modern CPUs.
This question belongs to:
Computer
Computer Hardware
Question #83
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What is the main use of a document feeder in scanners?
Correct Answer: Option B
Explanation:
Automatic Document Feeder (ADF) speeds up batch scanning.
Automatic Document Feeder (ADF) speeds up batch scanning.
This question belongs to:
Computer
Computer Hardware
Question #84
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Which hardware is essential for booting the computer?
Correct Answer: Option C
Explanation:
BIOS initializes hardware during boot.
BIOS initializes hardware during boot.
This question belongs to:
Computer
Computer Hardware
Question #85
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4K resolution is approximately:
Correct Answer: Option B
Explanation:
4K UHD is 3840 × 2160 pixels.
4K UHD is 3840 × 2160 pixels.
This question belongs to:
Computer
Computer Hardware
Question #86
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Which is an example of secondary storage?
Correct Answer: Option D
Explanation:
Pen drives are external secondary storage.
Pen drives are external secondary storage.
This question belongs to:
Computer
Computer Hardware
Question #87
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The technology behind modern touchscreens is primarily:
Correct Answer: Option A
Explanation:
Capacitive touchscreens are common in smartphones and tablets.
Capacitive touchscreens are common in smartphones and tablets.
This question belongs to:
Computer
Computer Hardware
Question #88
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What does the 'dpi' setting affect in a mouse?
Correct Answer: Option D
Explanation:
Higher DPI means more sensitive mouse movement.
Higher DPI means more sensitive mouse movement.
This question belongs to:
Computer
Computer Hardware
Question #89
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Which component is responsible for fan control in a PC?
Correct Answer: Option D
Explanation:
BIOS manages hardware including cooling.
BIOS manages hardware including cooling.
This question belongs to:
Computer
Computer Hardware
Question #90
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Line printers are used for:
Correct Answer: Option C
Explanation:
They are high-volume impact printers.
They are high-volume impact printers.
This question belongs to:
Computer
Computer Hardware
