Computer Fundamentals MCQs with Answers and Explanations

Question #141

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What is the storage capacity of a CD-ROM typically?

A. 1.44 MB

B. 4.7 GB

C. 700 MB

D. 256 MB

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Correct Answer: Option C

Explanation:
A standard CD-ROM holds about 700 MB of data (or 80 minutes of audio).

This question belongs to: Computer Computer Fundamentals

Question #142

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Which type of computer is used in ATMs and embedded systems?

A. Microcomputer

B. Mainframe

C. Embedded computer

D. Supercomputer

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Correct Answer: Option C

Explanation:
Embedded computers are specialized systems designed for specific tasks, such as ATMs, microwaves, and car engines.

This question belongs to: Computer Computer Fundamentals

Question #143

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What is the binary equivalent of decimal 5?

A. 110

B. 111

C. 101

D. 100

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Correct Answer: Option C

Explanation:
5 in binary is 101 (4+1).

This question belongs to: Computer Computer Fundamentals

Question #144

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Who is known as the father of the computer?

A. Charles Babbage

B. Blaise Pascal

C. Alan Turing

D. John von Neumann

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Correct Answer: Option A

Explanation:
Charles Babbage is considered the father of the computer for his work on the Analytical Engine.

This question belongs to: Computer Computer Fundamentals

Question #145

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Which device is used to convert digital signals to analog signals?

A. Router

B. Hub

C. Switch

D. Modem

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Correct Answer: Option D

Explanation:
A modem (modulator-demodulator) converts digital data to analog for transmission over telephone lines and vice versa.

This question belongs to: Computer Computer Fundamentals

Question #146

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What is the base of the octal number system?

A. 16

B. 8

C. 2

D. 10

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Correct Answer: Option B

Explanation:
The octal system has a base of 8, using digits 0 to 7.

This question belongs to: Computer Computer Fundamentals

Question #147

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Which generation of computers used transistors?

A. Second

B. First

C. Third

D. Fourth

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Correct Answer: Option A

Explanation:
Second-generation computers (1950s-1960s) used transistors, which were smaller and more reliable than vacuum tubes.

This question belongs to: Computer Computer Fundamentals

Question #148

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Which of the following is a mainframe computer characteristic?

A. High processing power and large storage

B. Used by a single user

C. Small size

D. Low cost

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Correct Answer: Option A

Explanation:
Mainframes are large, powerful computers used by organizations for bulk data processing and support many users simultaneously.

This question belongs to: Computer Computer Fundamentals

Question #149

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What is the purpose of an operating system?

A. To connect to the internet

B. To manage hardware and software resources

C. To execute applications only

D. To store data permanently

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Correct Answer: Option B

Explanation:
An operating system manages computer hardware, software resources, and provides common services for programs.

This question belongs to: Computer Computer Fundamentals

Question #150

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Which unit measures the speed of a computer's processor?

A. Hertz

B. Baud

C. Bytes

D. MIPS

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Correct Answer: Option A

Explanation:
Processor speed is measured in Hertz (cycles per second), e.g., GHz.

This question belongs to: Computer Computer Fundamentals

Question #151

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What is the full form of BIOS?

A. Binary Input Output System

B. Basic Integrated Output System

C. Basic Input Output System

D. Boot Input Output System

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Correct Answer: Option C

Explanation:
BIOS stands for Basic Input Output System, which initializes hardware during booting.

This question belongs to: Computer Computer Fundamentals

Question #152

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What is the function of the Control Unit (CU) in a CPU?

A. Handles network communication

B. Controls and coordinates operations

C. Performs arithmetic operations

D. Stores data permanently

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Correct Answer: Option B

Explanation:
The Control Unit directs the operation of the processor by interpreting instructions and generating control signals.

This question belongs to: Computer Computer Fundamentals

Question #153

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Which type of computer is typically used for weather forecasting?

A. Supercomputer

B. Minicomputer

C. Microcomputer

D. Mainframe

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Correct Answer: Option A

Explanation:
Supercomputers are used for complex tasks like weather forecasting due to their immense processing power.

This question belongs to: Computer Computer Fundamentals

Question #154

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What is the decimal equivalent of binary 111?

A. 6

B. 7

C. 8

D. 9

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Correct Answer: Option B

Explanation:
111 in binary = 4+2+1 = 7.

This question belongs to: Computer Computer Fundamentals

Question #155

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Which of the following is an output device?

A. Scanner

B. Keyboard

C. Monitor

D. Mouse

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Correct Answer: Option C

Explanation:
A monitor is an output device that displays visual information.

This question belongs to: Computer Computer Fundamentals

Question #156

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What does 'GIGO' stand for in computing?

A. Garbage In, Garbage Out

B. Global Input, Global Output

C. Good Input, Good Output

D. General Input, General Output

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Correct Answer: Option A

Explanation:
GIGO means that incorrect or poor input will produce faulty output.

This question belongs to: Computer Computer Fundamentals

Question #157

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Which generation of computers used microprocessors?

A. Second

B. Fifth

C. Third

D. Fourth

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Correct Answer: Option D

Explanation:
Fourth-generation computers (1970s-1980s) used microprocessors, placing all CPU components on a single chip.

This question belongs to: Computer Computer Fundamentals

Question #158

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What is the primary storage device in a computer?

A. SSD

B. RAM

C. Hard disk

D. ROM

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Correct Answer: Option B

Explanation:
Primary storage refers to RAM, which holds data and instructions currently being processed.

This question belongs to: Computer Computer Fundamentals

Question #159

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Which of the following is an example of a hybrid computer?

A. Smartphone

B. Petrol pump dispenser

C. Desktop

D. Laptop

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Correct Answer: Option B

Explanation:
Hybrid computers combine analog and digital features, like petrol pump dispensers that measure and process fuel flow.

This question belongs to: Computer Computer Fundamentals

Question #160

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What is the smallest storage unit in a computer?

A. Kilobyte

B. Bit

C. Megabyte

D. Byte

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Correct Answer: Option B

Explanation:
A bit is the smallest unit, representing a 0 or 1.

This question belongs to: Computer Computer Fundamentals

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