A system uses optimal policy for a page replacement. It has 4 page frames with no pages loaded to begin with. Consider the following scenario
Case-1: System first accesses 200 distinct pages in sequential order and then access same 200 distinct pages in same order.
Case-2: System first accesses 200 distinct pages in sequential order and then access same 200 distinct page in reverse order.
The difference in the number of faults occurred in both case are _________.