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 #21
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What does the term 'resolution' refer to in monitors?
Correct Answer: Option D
Explanation:
Resolution is the total number of pixels (e.g., 1920x1080).
Resolution is the total number of pixels (e.g., 1920x1080).
This question belongs to:
Computer
Computer Hardware
Question #22
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Which hardware component is responsible for executing arithmetic and logical operations?
Correct Answer: Option B
Explanation:
Arithmetic Logic Unit (ALU) performs calculations and logical operations.
Arithmetic Logic Unit (ALU) performs calculations and logical operations.
This question belongs to:
Computer
Computer Hardware
Question #23
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A device that produces sound output is called:
Correct Answer: Option A
Explanation:
Speakers are audio output devices.
Speakers are audio output devices.
This question belongs to:
Computer
Computer Hardware
Question #24
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What is the main disadvantage of CRT monitors compared to LCD?
Correct Answer: Option B
Explanation:
CRT monitors are bulkier due to the cathode ray tube technology.
CRT monitors are bulkier due to the cathode ray tube technology.
This question belongs to:
Computer
Computer Hardware
Question #25
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Which memory is used to store BIOS instructions?
Correct Answer: Option A
Explanation:
ROM contains firmware like BIOS which is non-volatile.
ROM contains firmware like BIOS which is non-volatile.
This question belongs to:
Computer
Computer Hardware
Question #26
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Optical Mouse uses which technology to detect movement?
Correct Answer: Option C
Explanation:
Optical mice use light-emitting diodes and sensors.
Optical mice use light-emitting diodes and sensors.
This question belongs to:
Computer
Computer Hardware
Question #27
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What is the function of a graphics card?
Correct Answer: Option A
Explanation:
GPU (Graphics Processing Unit) handles visual rendering.
GPU (Graphics Processing Unit) handles visual rendering.
This question belongs to:
Computer
Computer Hardware
Question #28
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Inkjet printers are best suited for:
Correct Answer: Option A
Explanation:
Inkjet printers excel in high-quality color prints like photos.
Inkjet printers excel in high-quality color prints like photos.
This question belongs to:
Computer
Computer Hardware
Question #29
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Which component connects the CPU to other parts of the motherboard?
Correct Answer: Option C
Explanation:
Bridges and buses facilitate communication on the motherboard.
Bridges and buses facilitate communication on the motherboard.
This question belongs to:
Computer
Computer Hardware
Question #30
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What type of device is a webcam?
Correct Answer: Option C
Explanation:
Webcam captures video input for the computer.
Webcam captures video input for the computer.
This question belongs to:
Computer
Computer Hardware
