ITPEC IP April 2023 Question 21
ITPEC IP April 2023 — Question 21 of 100
A deadlock occurs when two or more processes wait indefinitely for resources held by one another. For example, process P holds resource A and waits for B, while process Q holds B and waits for A. Because neither can proceed far enough to release its resource, the circular wait persists unless the system detects and resolves it.
Answer (c)
Why not others:
- (a) describes access control preventing unauthorized information access
- (b) describes account lockout after repeated failed authentication
- (d) describes expiration of a scheduling time slice, after which a process can return to the ready queue
Key rule: Deadlock combines exclusive resources with a circular chain of processes that hold one resource while waiting for another.
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