4K resolution is approximately: MCQ with Answer and Explanation

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4K resolution is approximately:

A. 1280x720

B. 3840x2160

C. 1920x1080

D. 2560x1440

Answer: Option B

Solution (By JKSSB Mock Tests)

4K UHD is 3840 × 2160 pixels.

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Question #1

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Wireless charging pads for devices use:

A. USB cables

B. Bluetooth

C. Infrared

D. Electromagnetic induction

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Correct Answer: Option D

Explanation:
Qi standard for phones.

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Question #2

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

A. Monitors use RGB

B. Projectors only RGB

C. Speakers

D. CMYK color model in printers

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Correct Answer: Option D

Explanation:
Subtractive color model.

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Question #3

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The front side bus (FSB) has been largely replaced by:

A. Slower buses

B. USB

C. Direct CPU connections or QPI

D. HDMI

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Correct Answer: Option C

Explanation:
Modern architectures.

This question belongs to: Computer Computer Hardware

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