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 14 of 17
Question #261
What is the decimal equivalent of binary 1101?
A. 13
B. 15
C. 12
D. 14
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Correct Answer: Option A

Explanation:
1101 = 8+4+1 = 13.
This question belongs to: Computer Computer Fundamentals
Question #262
Which component is known as the temporary memory of a computer?
A. Hard disk
B. ROM
C. SSD
D. RAM
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Correct Answer: Option D

Explanation:
RAM is temporary (volatile) storage used during processing.
This question belongs to: Computer Computer Fundamentals
Question #263
Which of the following is an example of application software?
A. Device driver
B. Microsoft Excel
C. BIOS
D. Linux
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Correct Answer: Option B

Explanation:
Microsoft Excel is an application for spreadsheets; the others are system-level software.
This question belongs to: Computer Computer Fundamentals
Question #264
What is the hexadecimal equivalent of binary 1010?
A. B
B. A
C. C
D. D
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Correct Answer: Option B

Explanation:
Binary 1010 equals decimal 10, which is A in hex.
This question belongs to: Computer Computer Fundamentals
Question #265
What does 'UART' stand for?
A. Universal Asynchronous Receiver/Transmitter
B. Universal Asynchronous Response/Transmitter
C. Universal Asynchronous Receiver/Transceiver
D. Universal Automatic Receiver/Transmitter
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Correct Answer: Option A

Explanation:
UART is a hardware device for asynchronous serial communication, common in old interfaces.
This question belongs to: Computer Computer Fundamentals
Question #266
Which type of computer is used for satellite control and weather modeling?
A. Supercomputer
B. Mainframe
C. Microcomputer
D. Minicomputer
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Correct Answer: Option A

Explanation:
Supercomputers are used for complex simulations like weather modeling and satellite control.
This question belongs to: Computer Computer Fundamentals
Question #267
What is the binary equivalent of octal 72?
A. 101010
B. 111100
C. 111010
D. 110010
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Correct Answer: Option C

Explanation:
Octal 72 = 7 2 -> 111 010 = 111010 binary.
This question belongs to: Computer Computer Fundamentals
Question #268
Which of the following is a characteristic of secondary storage?
A. High speed
B. Volatile
C. Directly accessible by CPU
D. Non-volatile
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Correct Answer: Option D

Explanation:
Secondary storage is non-volatile, retaining data even when power is off.
This question belongs to: Computer Computer Fundamentals
Question #269
What is the purpose of the system clock?
A. Measures temperature
B. Controls fan speed
C. Synchronizes operations of components
D. Manages power consumption
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Correct Answer: Option C

Explanation:
The system clock provides timing signals to coordinate activities of the CPU and other components.
This question belongs to: Computer Computer Fundamentals
Question #270
What is the decimal equivalent of octal 72?
A. 59
B. 60
C. 58
D. 61
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Correct Answer: Option C

Explanation:
Octal 72 = 7*8 + 2 = 56+2 = 58.
This question belongs to: Computer Computer Fundamentals
Question #271
Which of the following is a type of system software?
A. Operating system
B. Word processor
C. Spreadsheet
D. Web browser
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Correct Answer: Option A

Explanation:
Operating system is system software; others are applications.
This question belongs to: Computer Computer Fundamentals
Question #272
What is the binary equivalent of hexadecimal F?
A. 1110
B. 1101
C. 1111
D. 1011
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Correct Answer: Option C

Explanation:
F hex = 15 decimal = 1111 binary.
This question belongs to: Computer Computer Fundamentals
Question #273
Which generation introduced the concept of parallel processing?
A. Third
B. Second
C. Fourth
D. Fifth
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Correct Answer: Option D

Explanation:
Fifth-generation computers focus on parallel processing and AI.
This question belongs to: Computer Computer Fundamentals
Question #274
What is the role of the motherboard?
A. Stores data permanently
B. Manages power supply
C. Performs arithmetic operations
D. Connects all components of the computer
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Correct Answer: Option D

Explanation:
The motherboard is the main circuit board that connects the CPU, memory, and peripherals.
This question belongs to: Computer Computer Fundamentals
Question #275
What is the hexadecimal equivalent of decimal 30?
A. 2A
B. 1E
C. 1F
D. 20
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Correct Answer: Option B

Explanation:
30 decimal = 1E hex (1*16 + 14).
This question belongs to: Computer Computer Fundamentals
Question #276
Which of the following is a characteristic of a mainframe computer?
A. Small physical size
B. Used by a single user
C. Low processing power
D. High reliability and availability
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Correct Answer: Option D

Explanation:
Mainframes are known for high reliability, availability, and massive I/O capacity.
This question belongs to: Computer Computer Fundamentals
Question #277
What is the octal equivalent of decimal 100?
A. 145
B. 146
C. 144
D. 147
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Correct Answer: Option C

Explanation:
100 decimal = 144 octal (1*64 + 4*8 + 4 = 100).
This question belongs to: Computer Computer Fundamentals
Question #278
Which component is used to store the BIOS?
A. RAM
B. Hard disk
C. Cache
D. ROM
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Correct Answer: Option D

Explanation:
BIOS is stored in ROM, which is non-volatile.
This question belongs to: Computer Computer Fundamentals
Question #279
Which of the following is not a type of computer?
A. Digital
B. Analog
C. Hybrid
D. Mechanical
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Correct Answer: Option D

Explanation:
Mechanical computers are historical; modern classification includes analog, digital, and hybrid.
This question belongs to: Computer Computer Fundamentals
Question #280
What is the binary equivalent of decimal 50?
A. 111010
B. 101010
C. 100110
D. 110010
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Correct Answer: Option D

Explanation:
50 = 32+16+2 = 110010 binary.
This question belongs to: Computer Computer Fundamentals

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