The HAL computer has 4 frames. The time of loading, time of last access, and R a

ID: 3554796 • Letter: T

Question

The HAL computer has 4 frames. The time of loading, time of last access, and R and M bits are shown below(time in clock ticks):

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Page Loaded Last Ref. R M

0 280 390 1 1

1 115 375 1 1

2 190 290 0 0

3 150 350 0 0

A) which page will NRU replace?

B) which page wil FIFI replace?

C) which page will LRU replace?

D) which page will second chance replace?

A) which page will NRU replace?

answer : page 2 because R and M = 0

B) B) which page wil FIFO replace?

answer : page 1 because it loaded at 115 (first in )

C) which page will LRU replace?

answer : page 2 because it refrenced at 290 (least recent )

D) which page will second chance replace?

answer : page 3 because it loaded ar 150 and refrence bit is 0

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