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A state is safe if the system can allocate resources to each process (up to its maximum) in some order and still avoid deadlock, which of the following is/are true
1. Deadlocked state is unsafe,
2. Unsafe state may lead to a deadlock situation.
3. Unsafe state must lead to a deadlock situation.
4. Deadlock state is a subset of unsafe state,
  • a)
    1, 2 and 3
  • b)
    1 and 2 only
  • c)
    1, 3 and 4
  • d)
    1, 2 and 4
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A state is safe if the system can allocate resources to each process (...

(i) Deadlock is unsafe state
(ii) The unsafe state may lead to deadlock.
(iii) Clearly deadlock state is subset of unsafe state.
Its not compulsory that unsafe state always result in deadlock
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Most Upvoted Answer
A state is safe if the system can allocate resources to each process (...
Explanation:
The following points explain the given statement in detail:

1. Deadlocked state is unsafe:
In a deadlocked state, none of the processes can proceed further, and they are waiting for some resources to be released. Hence, the system is not able to allocate resources to any process, which makes it an unsafe state.

2. Unsafe state may lead to a deadlock situation:
If the system is in an unsafe state, it may or may not lead to a deadlock situation. It depends on the order in which resources are allocated to processes. If the resources are allocated in such a way that no process is left waiting indefinitely, then it may not lead to a deadlock situation. However, if the resources are allocated in a way that some processes are left waiting indefinitely, then it may lead to a deadlock situation.

3. Unsafe state must lead to a deadlock situation:
This statement is incorrect. An unsafe state may or may not lead to a deadlock situation, as explained in point 2.

4. Deadlock state is a subset of unsafe state:
This statement is true. A deadlock state is a specific case of an unsafe state where all processes are waiting for some resources to be released, and no process can proceed further. Hence, every deadlock state is an unsafe state, but not every unsafe state is a deadlock state.

Therefore, the correct option is D - 1, 2, and 4.
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A state is safe if the system can allocate resources to each process (up to its maximum) in some order and still avoid deadlock, which of the following is/are true1. Deadlocked state is unsafe,2. Unsafe state may lead to a deadlock situation.3. Unsafe state must lead to a deadlock situation.4. Deadlock state is a subset of unsafe state,a)1, 2 and 3b)1 and 2 onlyc)1, 3 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer?
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