Q1 explain the four necessary condition for the deadlock to exist Q2 Consider a system with four processes P1, P2, P3, and P4, and two resources, R1, and R2, respectively Each resource has two instances Furthermore P1 allocates an instance of R2, and requests an instance of R1 P2 allocates an instance of R1, and doesnt need any other resource P3 allocates an instance of R1 and requires an instance of R2 P4 allocates an instance of R2, and doesnt need any other resource a) Draw the resource allocation graph for the state of the system b) Is the system in deadlock If yes, explain why If not, give a possible sequence of executions after which every process completes Q1 explain the four necessary condition for the deadlock to exist Q2 Consider a system with four processes P1, P2, P3, and P4, and two resources, R1, and R2, respectively Each resource has two instances Furthermore P1 allocates an instance of R2, and requests an instance of R1 P2 allocates an instance of R1, and doesn't need any other resource P3 allocates an instance of R1 and requires an instance of R2 P4 allocates an instance of R2, and doesn't need any other resource a) Draw the resource allocation graph for the state of the system b) is the system in deadlock If yes, explain why If not, give a possible sequence of executions after which every process completes

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Q1: explain the four necessary condition for the deadlock to exist Q2: Consider a system with four processes P1, P2, P3, and P4, and two

Q1: explain the four necessary condition for the deadlock to exist

Q2: Consider a system with four processes P1, P2, P3, and P4, and two resources, R1, and R2, respectively. Each resource has two instances. Furthermore:

P1 allocates an instance of R2, and requests an instance of R1

P2 allocates an instance of R1, and doesnt need any other resource

P3 allocates an instance of R1 and requires an instance of R2

P4 allocates an instance of R2, and doesnt need any other resource

a) Draw the resource allocation graph for the state of the system

b) Is the system in deadlock? If yes, explain why. If not, give a possible sequence of executions after which every process completes.

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Q1: explain the four necessary condition for the deadlock to exist Q2: Consider a system with four processes P1, P2, P3, and P4, and two resources, R1, and R2, respectively. Each resource has two instances. Furthermore: P1 allocates an instance of R2, and requests an instance of R1 P2 allocates an instance of R1, and doesn't need any other resource P3 allocates an instance of R1 and requires an instance of R2 P4 allocates an instance of R2, and doesn't need any other resource a) Draw the resource allocation graph for the state of the system b) is the system in deadlock? If yes, explain why. If not, give a possible sequence of executions after which every process completes