Stacks are used for procedure call frames, which include local variables and parameters.

True $.$a $0$

False $.$b $0$

$30$

Consider the following string of page references: $7,0,1,2,0,3,0,4,2,3,0,3,2.$

Given an empty main memory with $3$ page frames, find out the page miss rate for the OPTIMAL page replacement algorithm.

Count page faults only after all frames have been initialized.

Note: Assume the page reference string contimues with $1,2,0,1,7,0,1$