A computer has four page frames. The time of loading, time of last access, and the R and M bits for each page are as shown below (the times are in clock ticks):

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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A computer has four page frames. The time of loading, time of last access, and the R and bits for each page are as shown below (the times are in clock ticks):

Page

Loaded

Last Referenced

R

M

0

176

330

1

0

1

280

315

0

1

2

190

320

0

0

3

160

335

1

1

 

(a) Which page will NRU replace?

(b) Which page will FIFO replace?

(c) Which page will LRU replace?

(d) Which page will second chance replace?

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