Which component inside a desktop computer case serves as the central structural circuit board, linking the CPU, memory, and expansion cards together? MCQ with Answer and Explanation

Question

Which component inside a desktop computer case serves as the central structural circuit board, linking the CPU, memory, and expansion cards together?

A. Hard Drive Platters

B. Sound Card

C. Motherboard

D. Power Supply Brick

Answer: Option C

Solution (By JKSSB Mock Tests)

The motherboard (or mainboard) is the primary printed circuit board that physically connects and enables communication among hardware components.

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Question #1

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What is the decimal equivalent of hexadecimal 2B?

A. 46

B. 45

C. 43

D. 44

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Correct Answer: Option C

Explanation:
2B = 2*16 + 11 = 32+11 = 43.

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Question #2

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

A. Analog

B. Desktop

C. Minicomputer

D. Mainframe

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Correct Answer: Option A

Explanation:
Analog, digital, and hybrid are based on functionality (data processing method).

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Question #3

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Which of the following is an example of a microcomputer?

A. Cray supercomputer

B. IBM z/OS mainframe

C. PDP-11 minicomputer

D. Apple MacBook

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Correct Answer: Option D

Explanation:
Microcomputers include personal computers like laptops, desktops, and tablets.

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