GATE CSE 2022 Q26: True statements about deadlock conditions and graphs

Which of the following statements is/are TRUE with respect to deadlocks?

Try it: multiple select: one or more correct options

Select all correct options. No negative marking, no partial marks.

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Answer: A, D (official GATE 2022 final answer key)

Concept used: Coffman conditions; a cycle is sufficient for deadlock only with single-instance resources; unsafe does not mean deadlocked.

First step: With no request edges, no process is waiting for anything; check what that implies for statement (D).

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Source: official GATE 2022 CS question paper and final answer key, organised by IIT Kharagpur. Question paper · Answer key