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Consider the procedure below for the Producer-Consumer problem which uses semaphores:
 
Q. Which one of the following is TRUE?
  • a)
    The producer will be able to add an item to the buffer, but the consumer can never consume it.
  • b)
    The consumer will remove no more than one item from the buffer.
  • c)
    Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.
  • d)
    The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Consider the procedure below for the Producer-Consumer problem which u...
Initially, there is no element in the buffer. 
Semaphore s = 1 and semaphore n = 0. 
We assume that initially control goes to the consumer when buffer is empty. 
semWait(s) decrements the value of semaphore ‘s’ . Now, s = 0 and semWait(n) decrements the value of semaphore ‘n’. Since, the value of semaphore ‘n’ becomes less than 0 , the control stucks in while loop of function semWait() and a deadlock arises. 
 
Thus, deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty. 
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Consider the procedure below for the Producer-Consumer problem which uses semaphores:Q.Which one of the following is TRUE?a)The producer will be able to add an item to the buffer, but the consumer can never consume it.b)The consumer will remove no more than one item from the buffer.c)Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.d)The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.Correct answer is option 'C'. Can you explain this answer?
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Consider the procedure below for the Producer-Consumer problem which uses semaphores:Q.Which one of the following is TRUE?a)The producer will be able to add an item to the buffer, but the consumer can never consume it.b)The consumer will remove no more than one item from the buffer.c)Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.d)The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.Correct answer is option 'C'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider the procedure below for the Producer-Consumer problem which uses semaphores:Q.Which one of the following is TRUE?a)The producer will be able to add an item to the buffer, but the consumer can never consume it.b)The consumer will remove no more than one item from the buffer.c)Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.d)The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the procedure below for the Producer-Consumer problem which uses semaphores:Q.Which one of the following is TRUE?a)The producer will be able to add an item to the buffer, but the consumer can never consume it.b)The consumer will remove no more than one item from the buffer.c)Deadlock occurs if the consumer succeeds in acquiring semaphore s when the buffer is empty.d)The starting value for the semaphore n must be 1 and not 0 for deadlock-free operation.Correct answer is option 'C'. Can you explain this answer?.
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