4K resolution is approximately: MCQ with Answer and Explanation

4K resolution is approximately:

A. 1920x1080

B. 1280x720

C. 3840x2160

D. 2560x1440

Answer: Option C

4K UHD is 3840 × 2160 pixels.

This question belongs to: Computer Computer Hardware

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Question #1 Report Error

Which is an example of tertiary storage?

A. SSD

B. RAM

C. Cache

D. Cloud storage or tape libraries

Correct Answer: Option D

Explanation:
Tertiary is offline or nearline archival storage.

This question belongs to: Computer Computer Hardware

Question #2 Report Error

The read/write head in HDD is part of:

A. Motor

B. Actuator arm assembly

C. Platter

D. Controller board

Correct Answer: Option B

Explanation:
Moves across platters.

This question belongs to: Computer Computer Hardware

Question #3 Report Error

Which technology is used in some keyboards for silent operation?

A. All are loud

B. Mechanical clicky

C. Scissor-switch or membrane

D. Optical only

Correct Answer: Option C

Explanation:
Suitable for offices.

This question belongs to: Computer Computer Hardware