When the page (data) requested by a program is not available in the memory, it is called as a page fault. This usually results in the application being shut down.
What is page fault and when does it occur?
A page is a fixed length memory block used as a transferring unit between physical memory and an external storage. A page fault occurs when a program accesses a page that has been mapped in address space, but has not been loaded in the physical memory.
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