Consider the following page reference string. 1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6 For LRU page replacement algorithm with 5 frames, the number of page faults is?

A. 10
B. 14
C. 8
D. 11

Consider the following page reference string. 1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6 For LRU page replacement algorithm with 4 frames, the number of page faults is?

A. 10
B. 14
C. 8
D. 11

If working set window is too large ____________

A. It will not encompass entire locality
B. It may overlap several localities
C. It will cause memory problems
D. None of the mentioned

If working set window is too small ____________

A. It will not encompass entire locality
B. It may overlap several localities
C. It will cause memory problems
D. None of the mentioned

The accuracy of the working set depends on the selection of ____________

A. Working set model
B. Working set size
C. Memory size
D. Number of pages in memory

In the working set model, for: 2 6 1 5 7 7 7 7 5 1 6 2 3 4 1 2 3 4 4 4 3 4 3 4 4 4 1 3 2 3 if DELTA = 10, then the working set at time t1 (….7 5 1) is?

A. {1, 2, 4, 5, 6}
B. {2, 1, 6, 7, 3}
C. {1, 6, 5, 7, 2}
D. {1, 2, 3, 4, 5}

A program is generally composed of several different localities, which _____ overlap.

A. May
B. Must
C. Do not
D. Must not

When a subroutine is called ____________

A. It defines a new locality
B. It is in the same locality from where it was called
C. It does not define a new locality
D. None of the mentioned

What is a locality?

A. A set of pages that are actively used together
B. A space in memory
C. An area near a set of processes
D. None of the mentioned

Thrashing _______ the CPU utilization.

A. Increases
B. Keeps constant
C. Decreases
D. None of the mentioned