There are 4 processes – PO, P1,P2,P3 and three resources A,B,C are available. The resource A has 9, B has 4 instances, C has 5 instances. Use Banker's algorithm to find out whether the system is in safe state or not. Max Allocation Need Available A B A A C A B C PO 3 3 2 2 1 1 4 P1 3 1 1 13 1 P2 5 1 2 P3 2 1 2 1 i) Calculate the need matrix ii) Identify the safe sequence U-O o o
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- COURSE Operating System Only correct answer will be upvoted. Else downvoted.Select all of the following statements that are true O After the execution of the banker's algorithm, if Finish[i] == false for all processes i, then the system is in a safe state. The banker's algorithm can only be applied when there are single units of each resource type only. Unsafe system states can lead to deadlocks. Deadlock avoidance aims to ensure that a system of processes will never enter an unsafe state. O Claim edges in resource allocation graphs indicate resource requests that a process may send out in the future. C In order for the banker's algorithm to be applicable, when a process starts up, it must state in advance the maximum number of resources it may request in the future. Q L 28 DELL) W 1There are three processes, P1, P2, and P3 The process P1 is waiting for a resource that has been exclusively acquired by the process P3, process P3 is waiting for a resource which is held by P2, and in turn P2 is waiting for a resource being held by P1 Identify the suitable deadlock condition for the given statement. O a. Mutual Exclusion O b. No preemption O c. Hold and wait O d. Circular wait
- 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…There are three processes, P4, P5, and P6 The process P4 is waiting for a resource that has been exclusively acquired by the process P5, process P5 is waiting for a resource which is held by P6, and in turn P6 is waiting for a resource being held by P3 Identify the suitable deadlock condition for the given statement. O a. No preemption O b. Circular wait O c. Mutual Exclusion O d. Hold and waitAn 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…
- Cooperating Processes: Select all of the following statements that are true. The bounded buffer solution to the producer-consumer problem discussed in class allows at most BUFFERSIZE-1 items in the buffer at the same time. Ordinary (unnamed) pipes provide a solution for unidirectional communication between related processes. A process is not able to create a pipe to itself. A solution for inter-process communication always relies on approaches for message passing. A process is cooperating if it can affect or be affected by the other processes executing in the system. At the Unix command level, it is possible to use pipes to channel the output of one command into another.There are six processes in three priority classes. Class 1 has the highest priority. (The amount of CPU time needed by each process is written in brackets.) • Class 1: II₁ (13 ms), II3 (8 ms), II6 (6 ms) • Class 2: II₂ (10 ms), II5 (4 ms) Class 3: II4 (12 ms) The system is using the following algorithm: The scheduler picks a process from the highest (non-empty) class. To schedule processes within the same class, the Round-Robin algorithm is used with quantum 5 ms. Process switch takes 1 ms. (a) Draw the schedule for the above processes on a timeline. (b) Mirko decided to modify the above algorithm: After each burst (i.e. when the quantum experies) the process is degraded by one class (unless it is already in Class 3). Draw the schedule for Mirko's modified algorithm.Deadlock avoidance: Select all of the following statements that are true. Deadlock avoidance aims to ensure that a system of processes will never enter an unsafe state. Claim edges in resource allocation graphs indicate resource requests that a process may send out in the future. The banker's algorithm can only be applied when there are single units of each resource type only. In order for the banker's algorithm to be applicable, when a process starts up, it must state in advance the maximum number of resources it may request. After the execution of the banker's algorithm, if Finish[i] == false for all processes i, then the system is in a safe state. Unsafe system states can lead to deadlocks.
- 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 Маx X Y X Y PO 1 8 3 P1 3 2 6 2 P2 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: Only REQ1 can be permitted Only REQ2 can be permitted Both REQ1 and REQ2 can be permitted Neither REQ1 nor REQ2 can be…There are 4 processes - P1, P2, P3, P4 and three resources A, B, C are available. The resource A has 7 instances, B has 5 instances, C has 3 instances. Use Banker's algorithm to find out whether the system is in safe state or not. i) Calculate the need matrix ii) Identify the safe sequence and update the available table. Max Allocation Need Available A A B A B C A P1 5 1 1 P2 1 P3 1 1 1 P4 2 1 2 2. B. 2. 2.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 Маx Y Y PO 8 4 3 P1 3 2 6 2 P2 2 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: 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 can…