What is the purpose of a bus in a computer? MCQ with Answer and Explanation

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What is the purpose of a bus in a computer?

A. To store data

B. To cool the system

C. To execute instructions

D. To transfer data between components

Answer: Option D

Solution (By JKSSB Mock Tests)

A bus is a communication system that transfers data between components.

This question belongs to: Computer Computer Fundamentals

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Question #1

Which of the following is a type of computer based on size?

A. Mainframe

B. Digital

C. Hybrid

D. Analog

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Correct Answer: Option A

Explanation:
Mainframe is a size-based classification (along with micro, mini, super).

This question belongs to: Computer Computer Fundamentals

Question #2

What is the hexadecimal equivalent of decimal 16?

A. 13

B. 10

C. 12

D. 11

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Correct Answer: Option B

Explanation:
16 decimal is 10 in hexadecimal (1*16 + 0).

This question belongs to: Computer Computer Fundamentals

Question #3

What is the purpose of the power-on self-test (POST)?

A. Checks for viruses

B. Loads the OS

C. Checks hardware functionality

D. Installs drivers

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Correct Answer: Option C

Explanation:
POST runs diagnostics on hardware like RAM and drives to ensure they work before booting.

This question belongs to: Computer Computer Fundamentals

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