Consider a system with four page frames and a program that uses eight pages. Consider the reference string 0 1 7 2 0 3 1 7 0 1 7 and assume that all four page frames are initially empty. Consider the three following algorithms:a. Optimal page replacementIn each cases show a diagram (ASCII art recommended) that shows which pages are in which frames throughout time, and page faults at the bottom. For instance: The first 4 steps is ALWAYS the same (i.e., just fill the four frames, with one page fault each time) | 0 1 7 20 | 0 01 |1 1 17 72 |3 |f| X X X X

Actually, Optimal Page Replacement AlgorithmReplace page that will not be used for longest period of…

Answered: Consider a system with four page frames…

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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Consider a system with four page frames and a program that uses eight pages. Consider the reference string 0 1 7 2 0 3 1 7 0 1 7 and assume that all four page frames are initially empty. Consider the three following algorithms:

a. Optimal page replacement

In each cases show a diagram (ASCII art recommended) that shows which pages are in which frames throughout time, and page faults at the bottom. For instance:

The first 4 steps is ALWAYS the same (i.e., just fill the four frames, with one page fault each time)

| 0 1 7 2
0 | 0 0
1 |
1 1 1
7 7
2 |
3 |
f| X X X X

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