Question

How is memory usage in a virtual memory system measured?

a.

By counting the total size of the working set

b.

By measuring when a page was last accessed

c.

By invalidating page-table entries

d.

By using the hard drive for secondary storage

Posted under Reverse Engineering

Answer: (a).By counting the total size of the working set Explanation:The memory usage in a virtual memory system is measured by tracking each process's working set, which is a data structure that lists the current physical pages that are in use in the process's address space. The total size of the working set is a measurement of the memory usage of the process at any given moment.

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