What is ECC memory used for? MCQ with Answer and Explanation

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What is ECC memory used for?

A. Error correction in servers

B. Laptops

C. Gaming PCs only

D. Monitors

Answer: Option A

Solution (By JKSSB Mock Tests)

Error-Correcting Code memory for reliability.

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Question #1

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What is ghosting in the context of keyboards?

A. Mouse lag

B. Multiple unintended key presses

C. Monitor issue

D. Printer smearing

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Correct Answer: Option B

Explanation:
NKRO (n-key rollover) prevents it.

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Question #2

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The ink level monitoring in printers uses:

A. Sensors or software estimation

B. Color detection

C. Manual check only

D. Weight measurement

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Correct Answer: Option A

Explanation:
Alerts users.

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Question #3

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4K resolution is approximately:

A. 3840x2160

B. 1920x1080

C. 2560x1440

D. 1280x720

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Correct Answer: Option A

Explanation:
4K UHD is 3840 × 2160 pixels.

This question belongs to: Computer Computer Hardware

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