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 3 of 22
Question #41
A trackball is a type of:
A. Storage device
B. Output device
C. Printing device
D. Pointing input device
Discuss
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Correct Answer: Option D

Explanation:
Trackball is an alternative to mouse for pointing.
This question belongs to: Computer Computer Hardware
Question #42
Which component is also known as the primary memory?
A. Hard Disk
B. ROM
C. RAM
D. Floppy Disk
Discuss
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Correct Answer: Option C

Explanation:
RAM is the main or primary memory.
This question belongs to: Computer Computer Hardware
Question #43
What is the full form of VGA?
A. Video General Adapter
B. Visual Graphics Adapter
C. Virtual Game Array
D. Video Graphics Array
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Correct Answer: Option D

Explanation:
VGA is a standard for video display connectors.
This question belongs to: Computer Computer Hardware
Question #44
Which of the following is used for biometric input?
A. Joystick
B. Fingerprint Scanner
C. Plotter
D. Speaker
Discuss
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Correct Answer: Option B

Explanation:
Fingerprint scanners are biometric input devices.
This question belongs to: Computer Computer Hardware
Question #45
SMPS stands for:
A. Standard Motherboard Processing Supply
B. Switch Mode Power Supply
C. Simple Memory Processing System
D. Serial Memory Power System
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Correct Answer: Option B

Explanation:
SMPS converts AC to DC power for computer components.
This question belongs to: Computer Computer Hardware
Question #46
Which output device is commonly used in presentations?
A. Scanner
B. Keyboard
C. Printer
D. Projector
Discuss
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Correct Answer: Option D

Explanation:
Projectors display computer output on large screens.
This question belongs to: Computer Computer Hardware
Question #47
What is the main advantage of SSD over HDD?
A. Easier repair
B. Lower cost per GB
C. Higher storage capacity
D. Faster data access and no moving parts
Discuss
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Correct Answer: Option D

Explanation:
SSDs are faster and more durable due to lack of mechanical parts.
This question belongs to: Computer Computer Hardware
Question #48
OCR stands for:
A. Original Character Register
B. Optical Color Reader
C. Optical Character Recognition
D. Output Control Reader
Discuss
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Correct Answer: Option C

Explanation:
OCR converts scanned text images into editable text.
This question belongs to: Computer Computer Hardware
Question #49
The expansion slot used for graphics cards is typically:
A. PCIe
B. PCI
C. ISA
D. AGP
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Correct Answer: Option A

Explanation:
PCIe (PCI Express) is the modern standard for graphics cards.
This question belongs to: Computer Computer Hardware
Question #50
Which keyboard layout is most commonly used in India?
A. DVORAK
B. QWERTY
C. AZERTY
D. Colemak
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Correct Answer: Option B

Explanation:
QWERTY is the standard keyboard layout.
This question belongs to: Computer Computer Hardware
Question #51
What does the term 'form factor' refer to in hardware?
A. The color scheme
B. The memory capacity
C. The physical size and shape
D. The processing speed
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Correct Answer: Option C

Explanation:
Form factor defines the physical specifications like ATX for motherboards.
This question belongs to: Computer Computer Hardware
Question #52
A device that reads magnetic stripes on cards is:
A. Magnetic Stripe Reader
B. MICR Reader
C. OCR Scanner
D. Barcode Scanner
Discuss
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Correct Answer: Option A

Explanation:
Used in ATMs and POS terminals.
This question belongs to: Computer Computer Hardware
Question #53
Which memory type is used in smartphones for main storage?
A. SRAM
B. EPROM
C. Flash Memory
D. DDR4 RAM
Discuss
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Correct Answer: Option C

Explanation:
NAND Flash memory is common in mobile devices.
This question belongs to: Computer Computer Hardware
Question #54
What is the function of a sound card?
A. To process video
B. To handle audio input and output
C. To connect to internet
D. To print documents
Discuss
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Correct Answer: Option B

Explanation:
Sound cards manage audio processing.
This question belongs to: Computer Computer Hardware
Question #55
Thermal printers are commonly used in:
A. Large format printing
B. Photo studios
C. Laser quality documents
D. Billing machines and POS
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Correct Answer: Option D

Explanation:
They use heat-sensitive paper for receipts.
This question belongs to: Computer Computer Hardware
Question #56
Which component manages data flow between CPU and memory?
A. Registers
B. ALU
C. Chipset
D. Control Unit
Discuss
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Correct Answer: Option C

Explanation:
Chipset on motherboard controls communications.
This question belongs to: Computer Computer Hardware
Question #57
What is a light pen used for?
A. Direct input on CRT screens
B. Scanning documents
C. Audio input
D. Printing
Discuss
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Correct Answer: Option A

Explanation:
Light pen is an old pointing device for screens.
This question belongs to: Computer Computer Hardware
Question #58
Dual-core, Quad-core refer to:
A. Number of monitors supported
B. Number of processing cores in CPU
C. Storage bays
D. RAM slots
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Correct Answer: Option B

Explanation:
Multi-core processors improve multitasking.
This question belongs to: Computer Computer Hardware
Question #59
Which is an example of a non-impact printer?
A. Daisy Wheel
B. Laser
C. Line Printer
D. Dot Matrix
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Correct Answer: Option B

Explanation:
Laser printers do not use impact mechanism.
This question belongs to: Computer Computer Hardware
Question #60
The term 'bus' in computer hardware refers to:
A. A processing chip
B. A pathway for data transfer
C. A storage unit
D. A vehicle for data
Discuss
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Correct Answer: Option B

Explanation:
Data bus, address bus, control bus transfer information.
This question belongs to: Computer Computer Hardware

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