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Question 75

Computer Awareness Computer memory Hard

Which of the following storage hardwares can be used as a back-up device?
a. HDD
b. ROM
c. RAM
d. Cache
e. Magnetic Tape
Choose the correct answer from the options given below:

(A) only \( \mathrm{A}, \mathrm{B} \) and C
(B) only B, C and D
(C) only A and E
(D) only \( \mathrm{A}, \mathrm{C} \) and E
✓ Correct Answer: Option C Verified Solution

📘 Step-by-Step Solution & Detailed Explanation:

A backup device must be non-volatile and have large capacity.

  • HDD: non-volatile and large, so it is used for backup.
  • Magnetic tape: non-volatile, cheap and huge, the classic backup medium.
  • ROM is read-only, so you cannot write backups to it. RAM and cache are volatile and lose data when power is off.

So only A and E.

Answer: (C)

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