Paper 1 · ICT
Which of the following statements are true in the context of cache memory?
- 1. Cache memory is used to reduce the average time to access data from main memory
- 2. Cache memory is costlier than main memory or disk memory but more economical than CPU registers
- 3. Cache memory is an extremely fast memory that acts as a buffer between RAM and the CPU
A1, 2 and 3 ✓ Correct
B2 and 3
C1 and 2
D1 and 3
Correct answer: (A) 1, 2 and 3 — All three statements are true, so that is the answer.
Explanation
★All three statements are true, so that is the answer.
★Cache memory reduces the average time to reach data from main memory.
★It is costlier than main or disk memory but cheaper than CPU registers.
★It is an extremely fast memory acting as a buffer between RAM and the CPU.
★So each of the three statements is true.
★So the answer is 1, 2 and 3.
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