Question

Explain the following term in virtual memory:

page fault

Explain the following term with respect to virtual memory:

Page fault

Answer 1

1. A “page fault” happens in many systems when a process is running with only a few pages of memory and an instruction is met that references to any data or instruction in another page that is outside the main memory, i.e., on the disk.
2. Before the execution of that instruction may resume at this point, the operating system needs to move the necessary page into memory.