There are five processes and three resource types. The total units of system resources are: (9,9,9). The maximum demands for every process are: P1(4,1,1), P2(3,3,2), P3(5,3,2), P4(5,1,2), P5(9,4,3). The current allocation is: P1 (0,1,1), P2 (2,1,1), P3 (3,1,2), P4 (1,1,1), and P5 (2,3,2). Is this state a safe state? Explain your answer and show all your work.
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- In a computer system five processes are attempting to proceed with three resource types. The total units of system resources are: (8,9,7). The maximum demands for every process are: P1(3,1,1), P2(3,3,2), P3(5,3,2), P4(5,1,2), P5(8,4,3). The current allocation is: P1 (0,1,1), P2 (2,1,1), P3 (3,1,2), P4 (1,1,1), and P5 (2,3,2). Is this state a safe state? Explain your answer. Please explain in great detail so i can understand .assume a system has 6 identical resources and N processes competing for them. each process can request at most 2 resources. what is the maximum value of N for the system to be deadlock free?Consider the following set of processes, each of which needs a certain amount of a series of shared resources (denoted as resources A, B, and C) to complete its work. The following chart shows the state of the system at a given point in time: Process Allocation Request Available A B C A B C A B C P0 1 1 1 1 0 0 0 0 0 P1 2 0 1 0 0 0 P2 0 1 0 0 0 2 P3 4 0 1 0 3 0 P4 0 2 0 4 0 2 Suppose that a process will hold all resources it has until it obtains all the resources it needs. Once it obtains all the resources it needs, it will complete its work and release all of the resources back into the available pool. Is there an order of execution for these processes that will lead to them all finishing their work, or will the system end up in a deadlocked state? If the system will end up in a deadlocked state, please explain why this deadlock will occur. You do not have to show any work for this question, just provide an…
- Consider a system with six processes P1, P2, P3, P4, P5, and P6, and five resources R1, R2, R3, R4, and R5. Each process can request and hold multiple instances of a resource, and each resource can be held by only one process at a time. The following table shows the maximum resource needs and current resource allocation of each process: Process Max Needs Allocation P1 R1:2 R1:1 P2 P3 P4 P5 P6 R2:1 R1:1 R4:2 R3:3 R5:1 R2:1 R4:1 R4:1 R3:2 R5:1 Draw a Resource Allocation Graph (RAG) to represent the current state of the system. Use the RAG to determine whether there are any deadlock cycles present in the system. If there are, identify the processes and resources involved in each deadlock cycle. How many deadlock cycles are present in the system? If there are any deadlock cycles, identify the processes and resources involved in each cycle.1. Two processes, A and B, each need three resources, 1, 2, and 3. Suppose 4 requests them in the order 1, 2, 3. If B also requests them in the same order, deadlock is not possible. However, if B requests them in the order 3, 2, 1, then deadlock is possible. With three resources, there are 3! or six possible orders in which B can request them. For each possible order in which B can request these resources, state whether or not a deadlock is possible for that order. (Assume that once a process acquires a resource, it does not release that resource until the end of that process.) a) 1, 2, 3 b) 1,3,2 c) 2, 1, 3 d) 2, 3, 1 e) 3, 1, 2 f) 3, 2, 1A single-CPU system has four processes, P1, P2, P3 and P4 in the ready queue. The execution times and I/O needs for these processes are given below. All times are in ms. (hint: when a process starts an IO operation, it is removed from the ready queue and put back at the end of the queue only when it completes its IO). Process P1: Arrives at 0ms, needs 23ms of CPU time. Performs I/O for 5ms after 10ms of its execution time, then another 5ms after 20ms of its execution time. Process P2: Arrives at 3ms, needs 12ms of CPU time. Performs I/O for 10ms after 5ms of its execution time. Process P3: Arrives at 1ms, needs 15ms of CPU time. Performs I/O for 1ms after 7ms of its execution time. Process P4: Arrives at 2ms, needs 8ms of CPU time. Performs I/O for 5ms after 4ms of its execution time. We assume that the CPU is idle if no one of these four processes is using it. Using Round Robin scheduling algorithm with a Time Quantum of 4ms and ignoring the context switch time, determine: a) The…
- A system contains five tasks. There are three resources X, Y, and Z. The resource requirements of the tasks are specified as follows: T: [X; 1] [Y; 2]. T;: [Z; 4]. T3: [X; 2]. T4: [X, 2][Y; 3]. T3: [X; 1] [Z; 3]. The tasks are indexed in the decreasing order of priorities and scheduled with the priority ceiling protocol. Find the maximum blocking time for each task.Suppose there are five processes, their arrival time and running time are listed as follows. Adopt FCFS and SJF, respectively, give the schedule order and average waiting time. Give the schedule order of SJF. Compute the average waiting time of SJF. Process Arrival time Running time P1 P2 P3 P4 0 3 4 5 3 10 6 14 Processes (P1,P2,P3,P4) arrived at time 0. The Duration of the processes are (6,8,4,2). All processes have a common X% wait time.The first process finishes at around 10.00. What is the common wait percentage for the processes (X). IVO Wait Time 80% 30% 60% Processes CPU Utilization 1 0.2 0.70 0.4 2 0.35 0.90 0.55 0.5 0.95 0.70 4 0.7 0.98 0.80 Select one: O a. Less than 30% O b. 30% O c. 60% v O d. More than 80% O e. 80% O f. None of the mentioned
- An operating system uses the banker's algorithm for deadlock avoidance when managing the allocation of three resource types X, Y and Z to three processes P0O, P1 and P2. The table given below presents the current system state. Here, the Allocation matrix shows the current number of resources of each type allocated to each process and the Max matrix shows the maximum number of resources of each type required by each process during its execution Allocation Max Y X Y PO 8 4 3 P1 3 6 P2 2 1 1 3 3 3 There are 3 units of type X, 2 units of type Y and 2 units of type Z still available. The system is currently in safe state. Consider the following independent requests for additional resources in the current state- REQ1: PO requests 0 units of X, 0 units of Y and 2 units of Z REQ2: P1 requests 2 units of X, 0 units of Y and 0 units of Z Write a program to check whether: A. Only REQ1 can be permitted B. Only REQ2 can be permitted C. Both REQ1 and REQ2 can be permitted D. Neither REQ1 nor REQ2…An operating system uses the banker’s algorithm for deadlock avoidance when managing the allocation of three resource types X, Y and Z to three processes P0, P1 and P2. The table given below presents the current system state. Here, the Allocation matrix shows the current number of resources of each type allocated to each process and the Max matrix shows the maximum number of resources of each type required by each process during its execution Allocation Max X Y Z X Y Z P0 0 0 1 8 4 3 P1 3 2 0 6 2 0 P2 2 1 1 3 3 3 There are 3 units of type X, 2 units of type Y and 2 units of type Z still available. The system is currently in safe state. Consider the following independent requests for additional resources in the current state- REQ1: P0 requests 0 units of X, 0 units of Y and 2 units of Z REQ2: P1 requests 2 units of X, 0 units of Y and 0 units of Z Write a program to check whether: Only REQ1 can be permitted Only REQ2 can be permitted…Consider the resource allocation graph shown below. Answer the following three sub- questions. D Write a set of processes. The answer is Write a set of resource types. The answer is Is the system in a deadlock? The answer is (Yes or No).