Considering a system with five processes P0 through P4 and four resources of type A, B, C,D. Suppose at time t0 following snapshot of the system has been taken: AllocationA B C D Max A B C D AvailableA B C D P00 0 1 10 0 1 21 4 2 1P1 10 0 01 7 5 0 P21 3 5 42 3 5 6 P30 6 3 20 6 5 2 P40 1 1 40 6 5 6 Answer the following questions using the banker’s algorithm:What is the content of the matrix Need? Is the system in a safe state? Find the safe sequenceIf a request from process P1 arrives for (0,4,2,0), can the request begranted immediately?

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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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Considering a system with five processes P0 through P4 and four resources of type A, B, C,D. Suppose at time t0 following snapshot of the system has been taken:

	Allocation A B C D	Max A B C D	Available A B C D
P0	0 0 1 1	0 0 1 2	1 4 2 1
P1	10 0 0	1 7 5 0
P2	1 3 5 4	2 3 5 6
P3	0 6 3 2	0 6 5 2
P4	0 1 1 4	0 6 5 6

Answer the following questions using the banker’s algorithm:

What is the content of the matrix Need?

Is the system in a safe state? Find the safe sequence
If a request from process P1 arrives for (0,4,2,0), can the request be

granted immediately?

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