Answer Posted / anshul.jain

Hi,
Virtual Memory is a concept in which user of a system feels
to have a large physical memory(Main) that actually does
not available.
for example U feel unlimited memory(Main) thougn u have
only in MB's.

If OS did not have this concept then user has to manage the
memory and in deed can run only a few program at a time.
It means here comes a limit on the efficiency of the system.

byeeeeeeeeeeeeeeeeee.

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