Which of the following statements about computer memory are correct? III. Virtual memory extends RAM using storage space.

Question

Which of the following statements about computer memory are correct?

I. Cache memory is faster than RAM.

II. SSDs are slower than HDDs.

III. Virtual memory extends RAM using storage space.

IV. DRAM is a type of non-volatile memory.

1. A. I and III only (Correct answer)
2. B. II and IV only
3. C. I, II, and III only
4. D. I, III, and IV only

Correct Answer

Option A — I and III only

Detailed Solution & Explanation

The correct answer is I and III only.

Key Points

• I is TRUE - cache is faster than RAM.
• II is FALSE - SSDs are faster than HDDs.
• III is TRUE - virtual memory uses disk space to extend RAM.
• IV is FALSE - DRAM is volatile (loses data when power is off).