A document camera can function as a: MCQ with Answer and Explanation

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A document camera can function as a:

A. Mouse

B. Printer

C. Digital visualizer for teaching

D. Standard scanner only

Answer: Option C

Solution (By JKSSB Mock Tests)

Real-time projection.

This question belongs to: Computer Computer Hardware

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Question #1

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What is 'firmware update' for printers?

A. Adds new hardware

B. Changes ink color

C. Improves performance and fixes bugs

D. Increases paper capacity

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Correct Answer: Option C

Explanation:
Manufacturer provided enhancements.

This question belongs to: Computer Computer Hardware

Question #2

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Biometric input devices enhance:

A. Display quality

B. Security through unique traits

C. Cooling

D. Printing speed

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Correct Answer: Option B

Explanation:
Fingerprint, face, iris etc.

This question belongs to: Computer Computer Hardware

Question #3

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What manages power states in hardware?

A. OS only

B. BIOS only

C. Printer driver

D. ACPI

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Correct Answer: Option D

Explanation:
Advanced Configuration and Power Interface.

This question belongs to: Computer Computer Hardware

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