The control unit in CPU directs: MCQ with Answer and Explanation

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The control unit in CPU directs:

A. Display output

B. Arithmetic operations

C. Flow of data and instructions

D. Memory storage

Answer: Option C

Solution (By JKSSB Mock Tests)

CU coordinates the operations of the processor.

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Which printer technology uses electrostatic charges to print?

A. Laser Printer

B. Dot Matrix Printer

C. Inkjet Printer

D. Thermal Printer

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Correct Answer: Option A

Explanation:
Laser printers use laser and electrostatic principles.

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Question #2

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What is the function of a northbridge in older systems?

A. Audio

B. High speed interconnect

C. Storage control

D. Slow I/O

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Correct Answer: Option B

Explanation:
Memory and graphics.

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Question #3

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What is the function of a voltage regulator in PSU?

A. Cool air

B. Stable output voltages

C. Increase power

D. Store energy

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Correct Answer: Option B

Explanation:
Protects components.

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