Which of the following hardware components will lose data when the power to a computer is switched off? Choose the correct answer from the options given below.

1.CPU Registers

2.Cache Memory

3.Main Memory

A3 only

B1 and 3 only

C1 and 2 only

D1, 2 and 3 ✓ Correct

Correct answer: (D) 1, 2 and 3

Explanation

CPU registers lose their contents when power is cut, so they are included.

Cache memory is also volatile and clears once the computer is switched off.

Main memory, being RAM, likewise loses everything without power.

All three are volatile working memories that hold data only while powered.

Permanent data must be saved to non volatile storage like a hard disk.

These fast memories trade persistence for speed close to the processor.

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