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Virtual Memory 2

A computer sy...

Question

A computer system supports 32-bits virtual addresses as well as 32-bits physical addresses. Since the virtual address space is of the same size as the physical address space, the operating system designers decide to get rid of the virtual memory entirely. Which one of the following is true?

A

The processor cache organization can be made more efficient now

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B

Efficient implementation of multi-user support is no longer possible

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C

CPU scheduling can be made more efficient now

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D

Hardware support for memory management is no longer needed

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Solution

The correct option is B Efficient implementation of multi-user support is no longer possible
The main purpose of virtual memory is by allocating less memory to the process, we plan to increase degree of multiprogramming, by bringing more processes into memory. If virtual memory is removed then the efficient implementation of multiprogramming and multi user in no longer possible.

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