Which of the following memory or storage devices are considered as primary storage?

1.Removable hard disk drive

2.RAM

3.ROM

4.DVD/CD

A1 & 4 only

B2 & 4 only

C1 & 3 only

D2 & 3 only ✓ Correct

Correct answer: (D) 2 & 3 only

Explanation

RAM and ROM are the primary storage here, while removable disks and DVD/CD are secondary.

Statement 1 a removable hard disk drive is secondary, not primary, storage.

Statement 2 RAM is primary storage the processor uses directly during work.

Statement 3 ROM is primary storage holding start-up firmware.

Statement 4 DVD/CD is optical secondary storage for long-term data.

Primary storage is directly accessible by the CPU, unlike secondary media.

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