Answer / subrahmanyam kambala

It is simple method of implementing virtual memory
page is loaded into physical memory from disk when it is needed

for better understanding Use this link

http://en.wikipedia.org/wiki/Demand_paging

Answer / prasanna

When the requested page is not available in page table then that page is said to be demand paging.when we want to execute a process, we swap it into memory.rather than swapping the entire process into main memory , however LAZY SWAPPER is used.

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