Computer Fundamentals MCQs

Computer

Computer Fundamentals MCQs

Practice Computer Fundamentals MCQs with answers and detailed explanations covering computer basics, characteristics, types of computers, generations of computers and fundamental concepts frequently asked in SSC, Railway, Banking, UPSC, JKSSB and other competitive exams.

326
Total Questions

Practice Questions

Page 8 of 17
Question #141
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
Which type of computer is used in ATMs and embedded systems?
A. Mainframe
B. Supercomputer
C. Microcomputer
D. Embedded computer
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Correct Answer: Option D

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
What is the binary equivalent of decimal 5?
A. 110
B. 101
C. 111
D. 100
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Correct Answer: Option B

Explanation:
5 in binary is 101 (4+1).
This question belongs to: Computer Computer Fundamentals
Question #144
Who is known as the father of the computer?
A. Blaise Pascal
B. Alan Turing
C. John von Neumann
D. Charles Babbage
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Correct Answer: Option D

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
Which device is used to convert digital signals to analog signals?
A. Switch
B. Modem
C. Router
D. Hub
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Correct Answer: Option B

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
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
Which generation of computers used transistors?
A. Fourth
B. Third
C. Second
D. First
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Correct Answer: Option C

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
Which of the following is a mainframe computer characteristic?
A. Used by a single user
B. High processing power and large storage
C. Low cost
D. Small size
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Correct Answer: Option B

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
What is the purpose of an operating system?
A. To execute applications only
B. To store data permanently
C. To manage hardware and software resources
D. To connect to the internet
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Correct Answer: Option C

Explanation:
An operating system manages computer hardware, software resources, and provides common services for programs.
This question belongs to: Computer Computer Fundamentals
Question #150
Which unit measures the speed of a computer's processor?
A. Bytes
B. Hertz
C. Baud
D. MIPS
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Correct Answer: Option B

Explanation:
Processor speed is measured in Hertz (cycles per second), e.g., GHz.
This question belongs to: Computer Computer Fundamentals
Question #151
What is the full form of BIOS?
A. Basic Input Output System
B. Binary Input Output System
C. Basic Integrated Output System
D. Boot Input Output System
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Correct Answer: Option A

Explanation:
BIOS stands for Basic Input Output System, which initializes hardware during booting.
This question belongs to: Computer Computer Fundamentals
Question #152
What is the function of the Control Unit (CU) in a CPU?
A. Performs arithmetic operations
B. Handles network communication
C. Controls and coordinates operations
D. Stores data permanently
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Correct Answer: Option C

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
Which type of computer is typically used for weather forecasting?
A. Microcomputer
B. Minicomputer
C. Mainframe
D. Supercomputer
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Correct Answer: Option D

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
What is the decimal equivalent of binary 111?
A. 9
B. 7
C. 8
D. 6
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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
Which of the following is an output device?
A. Monitor
B. Keyboard
C. Mouse
D. Scanner
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Correct Answer: Option A

Explanation:
A monitor is an output device that displays visual information.
This question belongs to: Computer Computer Fundamentals
Question #156
What does 'GIGO' stand for in computing?
A. Garbage In, Garbage Out
B. General Input, General Output
C. Global Input, Global Output
D. Good Input, Good 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
Which generation of computers used microprocessors?
A. Second
B. Third
C. Fifth
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
What is the primary storage device in a computer?
A. RAM
B. SSD
C. Hard disk
D. ROM
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Correct Answer: Option A

Explanation:
Primary storage refers to RAM, which holds data and instructions currently being processed.
This question belongs to: Computer Computer Fundamentals
Question #159
Which of the following is an example of a hybrid computer?
A. Desktop
B. Laptop
C. Smartphone
D. Petrol pump dispenser
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Correct Answer: Option D

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
What is the smallest storage unit in a computer?
A. Megabyte
B. Bit
C. Byte
D. Kilobyte
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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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