ITPEC IP October 2025 Question 10
ITPEC IP October 2025 — Question 10 of 100
Cache memory — it keeps frequently or recently used instructions and data close to the CPU, reducing average access time.
Cache is smaller and faster than main memory. When the CPU finds requested data in cache, it avoids a slower main-memory access; locality makes these cache hits common enough to improve processing efficiency.
Answer (c)
Why not others:
- (a) SSD is secondary storage and remains far slower than cache or RAM
- (b) Virtual memory uses storage to extend the apparent memory space and can increase access time on a page fault
- (d) Defragmentation reorganizes storage blocks and does not shorten CPU-to-RAM access
Key rule: Cache reduces latency between CPU and main memory; virtual memory increases capacity by moving pages between RAM and secondary storage.
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