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In which condition resource is not removed from a process holding ?

  • A.Hold and wait
  • B.Circular wait
  • C.Synchronization problem
  • D.Non preemption

Answer: D

Under non-preemption a resource cannot be taken from a process holding it.

It is one of the four Coffman conditions for deadlock, with mutual exclusion, hold and wait, and circular wait. All four must hold at once for deadlock, so breaking any one prevents it.

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