Discussion
Which of the following is used to implement memory protection in an operating system ?
Answer: D
Memory protection is implemented with All of these.
Virtual memory gives each process its own address space, so it cannot reach another's memory. Paging enforces this with page tables and protection bits (read, write, execute) on each page, and segmentation does it with base and limit registers and access rights for each segment.
Since each of the three mechanisms provides protection, choosing any one alone would be incomplete.
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