2- Consider a system with 5 process PO to P4, and three resource type, A has 10 instances , B has 5 instances , C has 7 instances. Spouse at time to following snapshot of the system has been taken: Process Allocation Маx Available A в с A В C A C 0 1 0 7 PO 3 3 0 0 3 2 P1 2 P2 3 0 2 9 P3 2 1 1 2 2 0 0 2 4 P4 2. 2.

2- Consider a system with 5 process PO to P4, and three resource type, A has 10 instances , B has 5 instances , C has 7 instances. Spouse at time to following snapshot of the system has been taken: Process Allocation Маx Available A в с A В C A C 0 1 0 7 PO 3 3 0 0 3 2 P1 2 P2 3 0 2 9 P3 2 1 1 2 2 0 0 2 4 P4 2. 2.

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 four processes P0 through P4 and three resource types A.B.C. Resource type A has 8 instances, B has 5 instances and C has 7 instances. Suppose at time t0 following snapshot of the system has been taken. Process Allocation Маx Available А B A B C А B C PO 1 1 1 3 2 3 1 2 2 P1 3 1 2 4 1 3 P2 1 1 1 2 1 1 P3 1 1 2 P4 3 1 1 3 4 3 By applying Banker's algorithm i. What will be the content of need matrix? Is the system in safe state? If yes, what is the safe sequence? 11. 2.
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Consider a system with five processes, PO →P4, three resource types, A, B, C. Type A has 9 instances, B has 6 instances, C has 6 instances. At time To the following snapshot of the system is taken. Max Need Available Allocated |A В С A В С А В с 1 1 3 2 2 PO P1 2 7 2 4 1 P2 P3 P4 0 2 4 3 O 2 O 2 1. 20 5 3 3 3 2 0 (You may write down the steps and all answers in a paper and upload) a) Is the system in a safe state? b)Write the Sequence c)Calculate Need matrix d)Write the steps, that leads to your conclusion.
Consider a system with five processes and three resource type. Resource type X has 7 instances, resource type Y has 10 instances and resource type Z has 5 instances. Suppose that at time 0, the following snapshot of the system has been taken. Is the process safe? If yes, what is the safe sequence? If not, which process is unsafe?
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Consider a system with five processes and three resource type. Resource type X has 7 instances, resource type Y has 10 instances and resource type Z has 5 instances. Suppose that at time 0, the following snapshot of the system has been taken. Suppose B request 2 additional instances of resource type X and 1 instance for resource type Y, can the request be granted? Is the system safe? If yes, what is the safe sequence?
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1. Considering a system with five processes P0 through P4 and three resources types A, B, C. Resource type A has 7 instances, B has 10 instances and type C has 5 instances. Suppose at time to following snapshot of the system has been taken: i) ii) Process PO P1 P2 P3 P4 A 0 0 2 1 2 Allocation B ( 2 3 2 0 C 1 0 0 1 0 A 3 2 2 2 3 Max B 7 3 9 2 4 C 5 2 0 2 3 A 2 What will be the content of need matrix? Is the system in safe state? If yes, then what is the safe sequence? Available B 3 C 3
Consider a system with three processes (P1, P2, and P3) and four resources (R1 has one instance, R2 has two instances, R3 has one instance, and R4 has three instances). The Snapshot at time Tx has the following situation: P1 holds one instance from Resource R2 and Request Resource R1 P2 holds Resource R1, one instance from Resource R2 and Request Resource R3 P3 holds Resource R3 and Request one instance from Resource R2 Draw the Resource Allocation Graph, then check if the system in safe state or not? If yes? What is the safe sequence?