Computer Fundamentals MCQs

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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 13 of 17
Question #241
Which of the following is a characteristic of a microcomputer?
A. High processing power for scientific tasks
B. Used in large organizations
C. Low cost and single-user
D. High cost and multi-user
Discuss
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Correct Answer: Option C

Explanation:
Microcomputers are affordable and designed for individual use.
This question belongs to: Computer Computer Fundamentals
Question #242
What is the hexadecimal equivalent of decimal 16?
A. 11
B. 12
C. 10
D. 13
Discuss
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Correct Answer: Option C

Explanation:
16 decimal is 10 in hexadecimal (1*16 + 0).
This question belongs to: Computer Computer Fundamentals
Question #243
Which component is responsible for performing arithmetic operations in a CPU?
A. Registers
B. Cache
C. Control Unit
D. ALU
Discuss
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Correct Answer: Option D

Explanation:
The ALU carries out arithmetic and logical operations.
This question belongs to: Computer Computer Fundamentals
Question #244
Which of the following is a characteristic of analog computers?
A. High precision
B. Continuous signals
C. Binary representation
D. Discrete data
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Correct Answer: Option B

Explanation:
Analog computers process continuous signals like voltage or temperature.
This question belongs to: Computer Computer Fundamentals
Question #245
What is the purpose of the power supply unit (PSU) in a computer?
A. Stores data permanently
B. Converts AC to DC and provides power
C. Manages data transfer
D. Processes graphics
Discuss
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Correct Answer: Option B

Explanation:
The PSU converts alternating current (AC) from the wall outlet to direct current (DC) for computer components.
This question belongs to: Computer Computer Fundamentals
Question #246
Which of the following is not a type of computer memory?
A. CPU
B. ROM
C. Cache
D. RAM
Discuss
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Correct Answer: Option A

Explanation:
CPU is a processor, not a memory type.
This question belongs to: Computer Computer Fundamentals
Question #247
What is the binary equivalent of hexadecimal 3A?
A. 111010
B. 101010
C. 111011
D. 110010
Discuss
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Correct Answer: Option A

Explanation:
3A = 3 (0011) and A (1010) => 00111010 = 111010 (without leading zeros).
This question belongs to: Computer Computer Fundamentals
Question #248
Which of the following is an example of an impact printer?
A. Laser
B. Inkjet
C. Thermal
D. Dot matrix
Discuss
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Correct Answer: Option D

Explanation:
Dot matrix printers are impact printers, using pins to strike an ink ribbon.
This question belongs to: Computer Computer Fundamentals
Question #249
What is the main advantage of integrated circuits over transistors?
A. Smaller size and lower cost
B. More reliable but slower
C. Higher speed only
D. Easier to manufacture
Discuss
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Correct Answer: Option A

Explanation:
ICs pack many transistors into a small chip, reducing size and cost, while increasing reliability.
This question belongs to: Computer Computer Fundamentals
Question #250
Which generation of computers used magnetic core memory?
A. First
B. Third
C. Fourth
D. Second
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Correct Answer: Option D

Explanation:
Second-generation computers commonly used magnetic core memory, which was faster and more reliable than drums.
This question belongs to: Computer Computer Fundamentals
Question #251
What is the decimal equivalent of hexadecimal 1A?
A. 27
B. 28
C. 29
D. 26
Discuss
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Correct Answer: Option D

Explanation:
1A = 1*16 + 10 = 26.
This question belongs to: Computer Computer Fundamentals
Question #252
Which of the following is a function of the operating system?
A. Managing files
B. Designing graphics
C. Compiling programs
D. Printing documents
Discuss
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Correct Answer: Option A

Explanation:
File management is a core OS function.
This question belongs to: Computer Computer Fundamentals
Question #253
What is the purpose of a heat sink in a computer?
A. To reduce noise
B. To increase processing speed
C. To dissipate heat from CPU
D. To store data
Discuss
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Correct Answer: Option C

Explanation:
A heat sink absorbs and disperses heat generated by the CPU to prevent overheating.
This question belongs to: Computer Computer Fundamentals
Question #254
Which of the following is a characteristic of minicomputers?
A. Single-user and low cost
B. High cost and large size
C. Used in space research
D. Multi-user and moderate cost
Discuss
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Correct Answer: Option D

Explanation:
Minicomputers are multi-user systems with moderate cost, bridging micros and mainframes.
This question belongs to: Computer Computer Fundamentals
Question #255
What is the octal equivalent of decimal 20?
A. 24
B. 23
C. 25
D. 26
Discuss
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Correct Answer: Option A

Explanation:
20 decimal = 24 octal (2*8 + 4 = 20).
This question belongs to: Computer Computer Fundamentals
Question #256
Which component of the CPU is responsible for controlling data flow?
A. ALU
B. Registers
C. Control Unit
D. Cache
Discuss
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Correct Answer: Option C

Explanation:
The Control Unit directs data flow and coordinates operations.
This question belongs to: Computer Computer Fundamentals
Question #257
Which of the following is a type of software that manages hardware?
A. Application software
B. System software
C. Programming software
D. Utility software
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Correct Answer: Option B

Explanation:
System software, including OS and drivers, manages hardware resources.
This question belongs to: Computer Computer Fundamentals
Question #258
What is the binary equivalent of octal 17?
A. 1110
B. 1101
C. 1011
D. 1111
Discuss
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Correct Answer: Option D

Explanation:
Octal 17 = 1 7 -> 001 111 = 1111 binary.
This question belongs to: Computer Computer Fundamentals
Question #259
Which of the following is a characteristic of fifth-generation computers?
A. Use of microprocessors
B. Artificial intelligence
C. Use of vacuum tubes
D. Magnetic core memory
Discuss
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Correct Answer: Option B

Explanation:
Fifth-generation computers focus on AI and natural language processing.
This question belongs to: Computer Computer Fundamentals
Question #260
What is the purpose of an expansion slot?
A. To cool the CPU
B. To connect to the internet
C. To add peripheral devices
D. To increase RAM
Discuss
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Correct Answer: Option C

Explanation:
Expansion slots allow users to add additional hardware like graphics cards or network adapters.
This question belongs to: Computer Computer Fundamentals

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