Discuss how virtual memory concept is implemented indicating its key objective.

CPA-Quantitative-Analysis-Section-4 BLOCK RELEASE

Virtual memory/storage
This refers to the computer arrangement wherethe computer divides programs into fixed or variable length portions, storing only a small portion of the program in primary memory (RAM) at one time. Only a few statements of a program actually execute at any given moment.

Virtual storage thus permits a very large number of programs to reside in primary memory because only a tiny portion of each program is actually located there thus resulting in efficient RAM usage. All other program pages are stored on a peripheral disk unit until they are ready for execution.
Virtual memory implementation:

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