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At particular time, the value of a counting semaphore is 10, it will become 7 after: (a) 3 V operations (b) 3 P operations (c) 5 V operations and 2 P operations (d) 2 V operations and 5 P operations Which of the following option is correct?
- a)Only (b)
- b)Only(d)
- c)Both (b) and (d)
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
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At particular time, the value of a counting semaphore is 10, it will b...
P: Wait operation decrements the value of the counting semaphore by 1. V: Signal operation increments the value of counting semaphore by 1. Current value of the counting semaphore = 10 a) after 3 P operations, value of semaphore = 10-3 = 7 d) after 2 v operations, and 5 operations value of semaphore = 10 + 2 - 5 = 7 Hence option (C) is correct.
Most Upvoted Answer
At particular time, the value of a counting semaphore is 10, it will b...
Explanation:
A counting semaphore is a synchronization mechanism that allows multiple processes/threads to access a shared resource in a mutually exclusive manner.
The P operation decrements the semaphore value, and the V operation increments the semaphore value.
Given that the initial value of the semaphore is 10, and we need to determine the final value after a certain number of operations.
(a) 3 V operations:
After 3 V operations, the semaphore value will be 13, which is greater than the initial value of 10, which is not possible in a counting semaphore.
(b) 3 P operations:
After 3 P operations, the semaphore value will be 7, which is the final value mentioned in the question.
(c) 5 V operations and 2 P operations:
After 5 V operations, the semaphore value will be 15, and after 2 P operations, the semaphore value will be 5. Hence, the final value is not 7.
(d) 2 V operations and 5 P operations:
After 2 V operations, the semaphore value will be 12, and after 5 P operations, the semaphore value will be 5. Hence, the final value is not 7.
Therefore, the correct option is (c) Both (b) and (d), i.e., the semaphore value will become 7 after 3 P operations or 2 V operations and 5 P operations.
HTML response:
A counting semaphore is a synchronization mechanism that allows multiple processes/threads to access a shared resource in a mutually exclusive manner.
The P operation decrements the semaphore value, and the V operation increments the semaphore value.
Given that the initial value of the semaphore is 10, and we need to determine the final value after a certain number of operations.
(a) 3 V operations:
After 3 V operations, the semaphore value will be 13, which is greater than the initial value of 10, which is not possible in a counting semaphore.
(b) 3 P operations:
After 3 P operations, the semaphore value will be 7, which is the final value mentioned in the question.
(c) 5 V operations and 2 P operations:
After 5 V operations, the semaphore value will be 15, and after 2 P operations, the semaphore value will be 5. Hence, the final value is not 7.
(d) 2 V operations and 5 P operations:
After 2 V operations, the semaphore value will be 12, and after 5 P operations, the semaphore value will be 5. Hence, the final value is not 7.
Therefore, the correct option is (c) Both (b) and (d), i.e., the semaphore value will become 7 after 3 P operations or 2 V operations and 5 P operations.
HTML response:
Explanation:
A counting semaphore is a synchronization mechanism that allows multiple processes/threads to access a shared resource in a mutually exclusive manner.
The P operation decrements the semaphore value, and the V operation increments the semaphore value.
Given that the initial value of the semaphore is 10, and we need to determine the final value after a certain number of operations.
- (a) 3 V operations:
- After 3 V operations, the semaphore value will be 13, which is greater than the initial value of 10, which is not possible in a counting semaphore.
- (b) 3 P operations:
- After 3 P operations, the semaphore value will be 7, which is the final value mentioned in the question.
- (c) 5 V operations and 2 P operations:
- After 5 V operations, the semaphore value will be 15, and after 2 P operations, the semaphore value will be 5. Hence, the final value is not 7.
- (d) 2 V operations and 5 P operations:
- After 2 V operations, the semaphore value will be 12, and after 5 P operations, the semaphore value will be 5. Hence, the final value is not 7.
Therefore, the correct option is (c) Both (b) and (d), i.e., the semaphore value will become 7 after 3 P operations or 2 V operations and 5 P operations.
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At particular time, the value of a counting semaphore is 10, it will become 7 after: (a) 3 V operations (b) 3 P operations (c) 5 V operations and 2 P operations (d) 2 V operations and 5 P operations Which of the following option is correct?a)Only (b)b)Only(d)c)Both (b) and (d)d)None of theseCorrect answer is option 'C'. Can you explain this answer?
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