ITPEC IP April 2021 Question 17
ITPEC IP April 2021 — Question 17 of 100
Virtual memory allows a program whose required address space exceeds physical main memory to execute. The operating system keeps currently needed pages in RAM and stores less active pages on secondary storage, moving them between the two as execution demands.
Answer (c)
Why not others:
- protecting OS memory is memory protection, not the primary purpose stated here
- writing memory to storage before power-off concerns hibernation or power management
- secondary storage is slower, not faster, than main memory
Key rule: Virtual memory extends the usable address space with secondary storage, trading speed for capacity.
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