Computer Science - Operating Systems Concepts - Discussion

Paging is a memory mgmt scheme in which memory is divided into fixed size blocks of memory known as pages. When we execute a program the pages containing the required data are loaded in the main memory. The no of pages that can be loaded in the main memory is fixed. So when a process asks for the data which is not in the memory at the moment the page fault occurs and then the pages with required data are loaded from the memory.

When the needed page is not available in the main memory then a page fault occurs?

Yes @Nandha Kumar.

I agree, but it's more correct to say the DATA REQUIRED is not in the any of the pages which are loaded in the main memory.

Guys, you may suggest or modify me!!

Memory is divided into fixed-size pieces of memory called pages in the paging memory management method. The pages containing the necessary data are loaded into the main memory before a program is executed. There is a fixed maximum number of pages that can be loaded into the main memory. A page fault happens when a process demands data that is not currently in memory, and the pages containing the necessary data are then loaded from memory.