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A system has 6 identical resources and N processes competing for them. Each process can request at most 2 resources. Which one of the following values of N could lead to a deadlock?
  • a)
    1
  • b)
    2
  • c)
    3
  • d)
    6
Correct answer is option 'D'. Can you explain this answer?
Most Upvoted Answer
A system has 6 identical resources and N processes competing for them....
As there are 6 identical resources and Max requirement is 2, hence Max. number of process can be allowed is
But when the number of process is more than 5
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Community Answer
A system has 6 identical resources and N processes competing for them....
To understand why option D (N = 6) could lead to a deadlock, let's analyze the scenario step by step.

1. Initial State:
- There are 6 identical resources available.
- No processes have acquired any resources yet.

2. Process 1:
- Process 1 starts and requests 2 resources.
- As there are enough resources available, Process 1 acquires the requested resources.

3. Process 2:
- Process 2 starts and also requests 2 resources.
- Since there are still 4 resources available, Process 2 acquires the requested resources.

4. Process 3:
- Process 3 starts and requests 2 resources.
- Now, there are only 2 resources remaining, and Process 3 cannot acquire the requested resources.
- Process 3 is put into a waiting state until the required resources become available.

5. Process 4:
- Process 4 starts and requests 2 resources.
- Since there are still 2 resources available, Process 4 acquires the requested resources.

6. Process 5:
- Process 5 starts and requests 2 resources.
- Now, there are no more resources available, and Process 5 cannot acquire the requested resources.
- Process 5 is put into a waiting state until the required resources become available.

7. Process 6:
- Process 6 starts and requests 2 resources.
- As there are no more resources available, Process 6 cannot acquire the requested resources.
- Process 6 is put into a waiting state until the required resources become available.

At this point, Processes 3, 5, and 6 are waiting for resources that are not currently available. This situation is known as a deadlock because none of these processes can proceed further without the required resources, and the resources they need are held by other processes that are also waiting.

Hence, option D (N = 6) could lead to a deadlock because when all 6 processes request 2 resources each, there will not be enough resources available to satisfy all the requests simultaneously, resulting in some processes being unable to proceed and waiting indefinitely for the required resources.
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A system has 6 identical resources and N processes competing for them. Each process can request at most 2 resources. Which one of the following values of N could lead to a deadlock?a)1b)2c)3d)6Correct answer is option 'D'. Can you explain this answer?
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