Which of the following statements 1-3 are correct about a Hard-Disk Drive (HDD) used as a storage device in a computer?

1.It has no moving parts.

2.It is non-volatile.

3.It uses magnetic properties to store data.

A1 & 2 only

B1 & 3 only

C2 & 3 only ✓ Correct

D1, 2 & 3

Correct answer: (C) 2 & 3 only

Explanation

Statement 1 is false, because a hard-disk drive has moving parts such as spinning platters and read-write heads.

Statement 2 is true, since an HDD is non-volatile and keeps data when power is off.

Statement 3 is true, as an HDD stores data using magnetic properties on its platters.

This leaves Statements 2 and 3 as the correct descriptions of an HDD.

The moving mechanical parts make HDDs slower and more fragile than solid-state drives.

A solid-state drive, by contrast, stores data in flash memory with no moving parts.

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