QUESTION 15 10.0 print) a document must sign up to use each device independently

Question

QUESTION 15 10.0 print) a document must sign up to use each device independently. Once they sign up for one of the devices (a printer of the scanner), they must wait for the other device (the penalty for signing up and not finishing the job is a really huge fine). Concerned with the poor performance of the business center, the manager hired a computer scientist to investigate, and the consultant surely drew a resource allocation graph. There was a loop in the graph. What should the consultant report? The system is in a deadlock. The system is in a livelock. The system is in an unsafe state. None of the above.

Explanation / Answer

The resource allocation graph has nodes representing printers and scanners. If a customer has a printer allocated, he cannot work on scanner and vice versa. Now the question says that there is a cycle in resource allocation graph.

The cycle in resource allocation graph says that there is atleast two person waiting for the release of resources from one another which will eventually not happen as they are waiting for each other's resources as well. This clearly shows that the system is in deadlock situation.

so option a) the system is in a deadlock is correct.

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