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Which of the following is page fault?
Page fault occurs when a program accesses a page of another program
Page fault occurs when a program accesses a page in main memory
Page fault occurs when there is an error in particular page
Page fault occurs when a program accesses a page which is not present in main memory
Answer: (d) Page fault occurs when a program accesses a page which is not present in main memory If the referred page is not present in the main memory, then there will be a miss, and the concept is called Page miss or page fault. The CPU has to access the missed page from the secondary memory. If the number of page fault is very high, then the effective access time of the system will become very high.
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