Question : When does a Page fault occur?
Option 1: There is an error on a specific page.
Option 2: A program accesses a page not currently in main memory.
Option 3: A program accesses a page of the main memory.
Option 4: A program accesses a page belonging to another program.
Correct Answer: A program accesses a page not currently in main memory.
Solution : The correct answer is A program accesses a page not currently in main memory.
When a program or process attempts to access a part of virtual memory that is not currently resident in physical RAM (Random Access Memory), a page fault occurs in a computer's memory management system. When a page fault occurs, the operating system must collect the necessary data or instructions from secondary storage and place them in RAM before enabling the program to resume execution.
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