Which of the following is a correct definition of volatile memory?

AIt does not lose its contents on failure of the power supply

BThe contents in the memory evaporate

CDue to heat the data is lost

DIt loses its contents on failure of the power supply ✓ Correct

Correct answer: (D) It loses its contents on failure of the power supply

Explanation

Volatile memory loses its stored contents as soon as the power supply fails.

RAM is the common example, needing constant power to retain data.

The claim that it keeps contents after power failure describes non-volatile memory instead.

Saying the contents evaporate is a loose description with no technical meaning.

Losing data merely due to heat is not what volatility means.

Non-volatile stores like ROM, flash and hard disks keep data without any power.

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