Tuesday, 31 October 2017

Net 44

CBSE NET JUNE 2012 PAPER II


Q. Consider the following page trace :
4,3, 2, 1, 4, 3, 5, 4, 3, 2, 1, 5
Percentage of page fault that would occur if FIFO page replacement algorithm is used with number of frames for the JOB m = 4 will be


(A) 8
(B) 9
(C) 10
(D) 12


Ans: (C)


Explanation: F shows page fault using FIFO  page replacement algorithm.
In FIFO algorithm we see the elements which enter first in the memory, have to out first.

4
3
2
1
4
3
5
4
3
2
1
5
4
4
4
4
4
4
5
5
5
5
1
1
3
3
3
3
3
3
4
4
4
4
5
2
2
2
2
2
2
3
3
3
3
1
1
1
1
1
1
2
2
2
F
F
F
F
H
H
F
F
F
F
F
F

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