Computer Hardware MCQs with Answers and Explanations

Question #41

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A trackball is a type of:

A. Storage device

B. Pointing input device

C. Printing device

D. Output device

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Correct Answer: Option B

Explanation:
Trackball is an alternative to mouse for pointing.

This question belongs to: Computer Computer Hardware

Question #42

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Which component is also known as the primary memory?

A. ROM

B. RAM

C. Floppy Disk

D. Hard Disk

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Correct Answer: Option B

Explanation:
RAM is the main or primary memory.

This question belongs to: Computer Computer Hardware

Question #43

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What is the full form of VGA?

A. Visual Graphics Adapter

B. Video General 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

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Which of the following is used for biometric input?

A. Fingerprint Scanner

B. Joystick

C. Speaker

D. Plotter

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Correct Answer: Option A

Explanation:
Fingerprint scanners are biometric input devices.

This question belongs to: Computer Computer Hardware

Question #45

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SMPS stands for:

A. Serial Memory Power System

B. Switch Mode Power Supply

C. Simple Memory Processing System

D. Standard Motherboard Processing Supply

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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

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Which output device is commonly used in presentations?

A. Keyboard

B. Printer

C. Scanner

D. Projector

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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

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What is the main advantage of SSD over HDD?

A. Higher storage capacity

B. Lower cost per GB

C. Faster data access and no moving parts

D. Easier repair

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Correct Answer: Option C

Explanation:
SSDs are faster and more durable due to lack of mechanical parts.

This question belongs to: Computer Computer Hardware

Question #48

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OCR stands for:

A. Output Control Reader

B. Optical Character Recognition

C. Original Character Register

D. Optical Color Reader

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Correct Answer: Option B

Explanation:
OCR converts scanned text images into editable text.

This question belongs to: Computer Computer Hardware

Question #49

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The expansion slot used for graphics cards is typically:

A. PCI

B. AGP

C. PCIe

D. ISA

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Correct Answer: Option C

Explanation:
PCIe (PCI Express) is the modern standard for graphics cards.

This question belongs to: Computer Computer Hardware

Question #50

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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

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What does the term 'form factor' refer to in hardware?

A. The memory capacity

B. The processing speed

C. The physical size and shape

D. The color scheme

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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

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A device that reads magnetic stripes on cards is:

A. MICR Reader

B. Magnetic Stripe Reader

C. Barcode Scanner

D. OCR Scanner

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Correct Answer: Option B

Explanation:
Used in ATMs and POS terminals.

This question belongs to: Computer Computer Hardware

Question #53

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Which memory type is used in smartphones for main storage?

A. DDR4 RAM

B. Flash Memory

C. SRAM

D. EPROM

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Correct Answer: Option B

Explanation:
NAND Flash memory is common in mobile devices.

This question belongs to: Computer Computer Hardware

Question #54

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What is the function of a sound card?

A. To process video

B. To print documents

C. To connect to internet

D. To handle audio input and output

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Correct Answer: Option D

Explanation:
Sound cards manage audio processing.

This question belongs to: Computer Computer Hardware

Question #55

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Thermal printers are commonly used in:

A. Large format printing

B. Billing machines and POS

C. Photo studios

D. Laser quality documents

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Correct Answer: Option B

Explanation:
They use heat-sensitive paper for receipts.

This question belongs to: Computer Computer Hardware

Question #56

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Which component manages data flow between CPU and memory?

A. ALU

B. Registers

C. Chipset

D. Control Unit

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Correct Answer: Option C

Explanation:
Chipset on motherboard controls communications.

This question belongs to: Computer Computer Hardware

Question #57

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What is a light pen used for?

A. Printing

B. Direct input on CRT screens

C. Scanning documents

D. Audio input

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Correct Answer: Option B

Explanation:
Light pen is an old pointing device for screens.

This question belongs to: Computer Computer Hardware

Question #58

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Dual-core, Quad-core refer to:

A. Storage bays

B. RAM slots

C. Number of processing cores in CPU

D. Number of monitors supported

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Correct Answer: Option C

Explanation:
Multi-core processors improve multitasking.

This question belongs to: Computer Computer Hardware

Question #59

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Which is an example of a non-impact printer?

A. Line Printer

B. Dot Matrix

C. Laser

D. Daisy Wheel

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Correct Answer: Option C

Explanation:
Laser printers do not use impact mechanism.

This question belongs to: Computer Computer Hardware

Question #60

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The term 'bus' in computer hardware refers to:

A. A pathway for data transfer

B. A processing chip

C. A storage unit

D. A vehicle for data

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Correct Answer: Option A

Explanation:
Data bus, address bus, control bus transfer information.

This question belongs to: Computer Computer Hardware

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