A page fault occurs in a virtual memory system whenever:

Question

A  page fault  occurs in a virtual memory system whenever:

Accepted Answer

A program attempts to access a page that is mapped in the virtual address space but is not currently loaded in physical memory.

Answer

The operating system successfully swaps a page out to the disk to free up space.

Answer

An invalid memory address is accessed that does not exist in the virtual address space.

Answer

The CPU attempts to access a page that is already present in physical memory (RAM).

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