Portable document scanners are useful for: MCQ with Answer and Explanation

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Portable document scanners are useful for:

A. Photo editing

B. High volume office only

C. 3D printing

D. Mobile professionals needing quick digitization

Answer: Option D

Solution (By JKSSB Mock Tests)

Compact and battery powered options exist.

This question belongs to: Computer Computer Hardware

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Question #1

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Which output device uses cyan, magenta, yellow, black inks?

A. Monitors use RGB

B. Speakers

C. CMYK color model in printers

D. Projectors only RGB

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Correct Answer: Option C

Explanation:
Subtractive color model.

This question belongs to: Computer Computer Hardware

Question #2

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L1, L2, L3 refer to levels of:

A. Cache memory

B. Hard disk partitions

C. RAM modules

D. Monitor sizes

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Correct Answer: Option A

Explanation:
Multi-level cache in modern CPUs.

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Question #3

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What is the use of a document camera?

A. Printing

B. Scanning to file only

C. Real-time display of physical documents

D. Audio recording

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Correct Answer: Option C

Explanation:
Also called visualizer.

This question belongs to: Computer Computer Hardware

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