What is the function of a compiler? MCQ with Answer and Explanation

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What is the function of a compiler?

A. Executes code without translation

B. Translates high-level code to machine code all at once

C. Translates line by line

D. Optimizes storage

Answer: Option B

Solution (By JKSSB Mock Tests)

A compiler translates the entire source code of a program into machine code before execution.

This question belongs to: Computer Computer Fundamentals

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Question #1

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Which early calculating aid invented by John Napier used a set of numbered ivory rods to simplify complex multiplication and division tasks?

A. Slide Rule

B. Abacus

C. Napier's Bones

D. Pascaline

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Correct Answer: Option C

Explanation:
John Napier invented 'Napier's Bones' in 1917, using carved rods to convert multiplication problems into simple addition steps.

This question belongs to: Computer Computer Fundamentals

Question #2

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What is the purpose of the power supply unit (PSU) in a computer?

A. Converts AC to DC and provides power

B. Processes graphics

C. Stores data permanently

D. Manages data transfer

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Correct Answer: Option A

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 #3

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What is the decimal equivalent of binary 1101?

A. 12

B. 15

C. 14

D. 13

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Correct Answer: Option D

Explanation:
1101 = 8+4+1 = 13.

This question belongs to: Computer Computer Fundamentals

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