Consider a program that generates the following set of page references: AC BDBA EFBFAGEFAAFBACGF Assuming that the program is given 4 page frames, how many page faults are generated using the following page replacement algorithms: a) FIFO b) LRU c) OPT Show the contents of the 4 page frames after every access and indicate when page faults occur. Assume all frames are empty at the beginning of the sequence. For example, the first page access (to page A) will cause a page fault, since no pages are loaded into the frames. Page A will be loaded into the first frame. This is indicated as below.

Consider a program that generates the following set of page references: AC BDBA EFBFAGEFAAFBACGF Assuming that the program is given 4 page frames, how many page faults are generated using the following page replacement algorithms: a) FIFO b) LRU c) OPT Show the contents of the 4 page frames after every access and indicate when page faults occur. Assume all frames are empty at the beginning of the sequence. For example, the first page access (to page A) will cause a page fault, since no pages are loaded into the frames. Page A will be loaded into the first frame. This is indicated as below.

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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Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

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Consider a program that generates the following set of page references:
AC BDBAEFBFAGEFAAFBACGF
Assuming that the program is given 4 page frames, how many page faults are generated using the
following page replacement algorithms:
a) FIFO
b) LRU
c) OPT
Show the contents of the 4 page frames after every access and indicate when page faults occur.
Assume all frames are empty at the beginning of the sequence.
For example, the first page access (to page A) will cause a page fault, since no pages are loaded
into the frames. Page A will be loaded into the first frame. This indicated as below.

Page ACBDBA EFBFA GEFAAF BACGF
Framel A
Frame2
Frame3
Frame4
Fault Y
Fill in the tables below and specify the number of page faults for each.
a) FIFO
Page
Framel
Frame2
Frame3
Frame4
Fault
# faults
b) LRU
Page
Frame1
Frame2
Frame3
Frame4
Fault
# faults = |
c) OPT
Page
Framel
Frame2
Frame3
Frame4
Fault
# faults =
ACBDBA EFB FAGEFAAF BAC GF
A
Y
ACBDBA EFBFA GEFAAF BACGF
A
Y
ACBDBA EFBFA GEFAAF BACGF
A
Y

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Step 1: Page replacement algorithms:FIFO, LRU and OPT

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Step 2: Page faults generated using all above three algorithms:-

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