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Deadlock Characterization

An operating ...

Question

An operating system contains 3 user processes each requiring 2 units of resource R. The minimum number of units of r such that no deadlocks will ever arise is

A

6

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B

4

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C

5

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D

3

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Solution

The correct option is B 4
There are 3 processes, and demands '2' resources. If any one gets equal resources as it's demand, deadlock won't occur, and according to this question 4 resources are enough.

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REQ 2: P1 requests 2 units of X, 0 units of Y and 0 units of Z

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