Please provide solution step by step with proper explanation. don't copy past online content please expert. give your own answer. i will give upvote. Thank you. Deadlocks2. Consider the following state of a system with four processes, Po, P1, P2, and P3, and five types ofresources, RS₁, RS2, RS3, RS4 and RSs: which are described by the vector E= [2; 4; 1; 4; 4].RS0PoR 0P₂0P₁ 2AllocatedRS2 RS3 RS4 RSS RS₁1121I00001000100010RequestRS2 RS3 RS4 RSS2 021231020111Using the deadlock detection algorithm, show that there is a deadlock in the system; identify theprocesses that are deadlocked; suggest at least one way out of the deadlock situation.

Using the deadlock detection algorithm, we can determine if a deadlock exists in the system by…

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Please provide solution step by step with proper explanation. don't copy past online content please expert. give your own answer. i will give upvote. Thank you.

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 computer system which has four identical units of a resource R. There are three processes each with a maximum claim of two units of resource R. Processes can request these resources in any way that is, two in one shot or one by one. The system always satisfies a request for a resource if enough resources are available. If the processes don't request any other kind of resource, show that the system never deadlocks?
Consider a system where processes can be dynamically created or terminated. A process can generate a new process. For example, Pi generates both P₂ and P3. Modify the happened-before relation and the linear logical clock scheme for events in such a dynamic set of processes.
Suppose that an operating system supports two kinds of sequential processes: high-priority interactive processes, and low-priority non-interactive processes. The behavior of the high-priority processes is to alternate between periods of computation of duration Tc and periods of blocking (waiting for input) of duration Tb. The behavior of the low-priority processes is to compute constantly, with no blocking. The operating system’s scheduling policy is round-robin with a quantum q, where Tc < q. Scheduling decisions are made only when a quantum expires, or when the running process blocks. The scheduler selects a low-priority process to run only if no high-priority processes are ready. Suppose there is one high-priority process and one low-priority process in the system, and that both processes will run for a long time. For what fraction of the time does the low-priority process run?
Hey, I have already received a good answer to this question but I am looking for greater detail to be provided. There are three processes P1, P2 and P3 are running in a system with 3 instances of a resource R1, 2 instances of a resource R2, and 2 instances of a resource R3. At a given time the allocation matrix is: A = [{1, 1, 1} { 0, 1, 0} { 1, 0, 0 }] Assume that the maximum matrix is M = [ {2,2,1} {1,1,1} {3,1,0}] While in this state, a new process P4 is created which requires at most 2 instances of R1 and one instance of R2. This process initially requests one instance of R1 to be allocated to it. Using the Banker’s algorithm, determine whether this request can be granted or must be refused.
Consider a job mix in which there is one CPU-intensive job, A, that has a single infinitely long CPU burst, and 3 I/O-intensive jobs, B, C, and D. The scheduler uses Round Robin scheduling with a time quantum of 3 ms. Here is an observed execution, where initially A is running and B, C, and D are in the ready queue in this order: AAAoBBoCoDoAAAoBBoAAAoDoAAAoBBoCoDoAAAoBBo Answer the following questions based on the above. Explain and give a specify a part of the execution. a) Could any of B’s I/O-burst time be 6 ms? Explain. b) Could any of B’s I/O-burst time be 4 ms? Explain.
1. Consider a system of 9 processes, P = {p1, ., p9). Associated with the system are 6 memory cells, M = {M1,., M6). The domain and range for each process is given in the following table: Process pi Domain D(pi) Range R(pi) p1 M1, M2 M3 p2 M1 M5 p3 p4 М3, М4 М3, М4 M1 M5 p5 M3 M4 рб M4 M4 p7 M5 M5 p8 МЗ, М4 M2 p9 M5, M6 M6 In addition, you are given the following precedence relation: > = {(P1,P2), (P1,P6), (P2,P3), (P2,P4), (P2,P5),(P3,P6),(P3,P8),(P4,P6), (P4,P7), (P5,P7), (P5,P8), (P6,P8), (P6,P9), (P7,P9), (P8,P9)} a. Construct the Precedence Graph (not containing any redundant edges). Use PowerPoint, diagrams.net, or any other app to draw the graph. b. Determine if the system above is always determinate. If it is not, add to necessary elements to make it determinate. 2. In the first problem, there were 9 processes, many of which were listed as pairs under the precedence relation. Suppose we are dealing with a system of only 5 processes named P1 through P5. You are given a set of…
Reduce the following primitive flow table tn a minimum numher of states. N. S. O/P P. S. TC: 01 10e 00 11 4. 1 5 4. 6.
Consider a computer system with three users: Alice, Bob, and Cindy. Alice owns file X, and Bob and Cindy can read it. Bob owns file Y, and Cindy can read and write the file Y, but Alice can only read it. Cindy owns file Z, but neither Alice nor Bob can read or write it. If a user owns a file, he/she can also execute the file. Create the ACM (access control matrix) of the system Show the ACL and CL of the ACM Now Cindy allows Alice to read Z, Alice removes Bob's ability to read X, and Bob removes all the rights of Alice and Cindy to Y. Show the ACM after these changes.
Consider four processes with the following start and end times: Process Start Time End Time ABCD 3 5 1 7 6 12 4 9 For each pair of proceses, say whether they run concurrently (Y) or not (N). (a) AB (b) AC (c) AD (d) BC (e) BD (f) CD
Let I represent an execution of init(s), W of wait(s), and S of signal(s). Then, for example, IWWS represents the sequence of calls init(s), wait(s), wait(s), and signal(s) by some processes in an operating system. For each of the following sequences of calls, state the value of s and the number of processes blocked after the last call in the sequence: *(a) IW (b) IS (c) ISSSW (d) IWWWS (e) ISWWWW
Suppose a system has 5 processes, P = {P1, P2, P3, P4, P5}, and 4 resources, R = {R1, R2, R3, R4}, where there are 2 instances of R1, 1 instance of R2, 3 instances of R3, and 3 instances of R4. The current state of the system is defined by the following requests and assignments: P1 is requesting an instance of R3 and has been assigned an instance of R2; P2 is requesting an instance of R1 and has been assigned an instance of R3; P3 is requesting an instance of R4 and has been assigned an instance of R1 and an instance of R3; P4 is requesting an instance of R3; P5 is requesting an instance of R2 and has been assigned an instance of R4. Is there deadlock in this system? (Explicitly state yes, there’s deadlock or no, there isn’t.) If applicable, draw a wait-for graph or resource-allocation graph, and use the appropriate graph to justify your answer. If you conclude there is no deadlock, your justification should contain a sequence of execution for the processes which shows that…
Consider a computer environment in which there are 4 magnetic drives, 2 printers, 3 scanners, and 1 optical drive. Three processes P1, P2, P3 are using these resources. At any point in time, the allocations and requests for these resources are as follows. Allocations: Magnetic drive Printer Scanner Optical drive P1 1 P2 2 1 P3 1 Requests: Magnetic drive 2 Printer Scanner Optical drive P1 1 P2 1 1 P3 2 1 Is there any way that the processes can complete without deadlock? If yes, explain how. If not, explain why not.