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  1. When does a Page fault occur?
    1. There is an error in a specific page
    2. A program accesses a page not currently in main memory
    3. A program accesses a page of main memory
    4. A program accesses a page belonging to another program
Correct Option: B

When the page (data) requested by a program is not available in the memory, it is called as a page fault. It occurs when a program accesses a page that has been mapped in address space, but has not been loaded in its main memory (RAM).This usually results in the application being shut down.


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