Computers and Technology, 12.03.2020 02:32 genyjoannerubiera

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Answer from: Terrydactly

a) 4 processes

b) 2 resources

c) R1: 2 instances

R2: 2 instances

d) R2

e) R1

f) R1

g) No resource

h) R1

i) R2

j) R2

k) No

l)No deadlock

Explanation:

You need to know that the resources that are required by the processes for completion are shown by the request edge and the resources allocated are shown by the allocation edge. And thus, we can find what resources are allocated to the process, and required for the completion accordingly. And here again, the cycle is created, and hence deadlock may or may not occur. However, we see that resources have multiple instances and get freed on time. And hence, deadlock does not occur.

Like,

P4 uses R2 and free one instance of R2.

P3 then uses one instance of R2 and free R2.

P3 then uses one instance of R3 and free R3.

P1 uses one instance of R1 and free R1 one instance

P1 then uses R2 and free R2.

P2 uses R1 and free R1.

Hence, all the processes are complete and deadlock does not occur.

Answer from: Quest

Iguess parallel lines

Answer from: Quest

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