A computer has three commonly used resources designated A$,$ B and C$.$ Up to three

processes designated X$,$ Y and Z run on the computer and each makes periodic use

of two of the three resources.

$$ Process X acquires A$,$ then B$,$ uses both and then releases both.

$$ Process Y acquires B$,$ then C$,$ uses both and then releases both.

$$ Process Z acquires C$,$ then A$,$ uses both and then releases both.

a$)$ If two of these processes are running simultaneously on the machine, can a dead

lock occur? If so$,$ describe the deadlock scenario.

b$)$ Describe a scenario in which deadlock occurs if all three processes are running

simultaneously on the machine.

c$)$ Modify the algorithm for acquiring resources so that deadlock cannot occur with

three processes running.