Which of the following statements about semaphores is false?
A) A thread performs the P operation after it enters its critical section.
B) A thread performs the V operation before exiting its critical section.
C) Initializing a semaphore sets the value of a protected variable to indicate that no thread is executing its critical section.
D) Initializing a semaphore creates a queue that stores references to threads waiting to enter their critical sections protected by that semaphore.
Correct Answer:
Verified
Q16: Which of the following mutual exclusion algorithms
Q17: Disabling interrupts _.
A) is a viable solution
Q18: A _ is a variable that governs
Q19: The test-and-set instruction _.
A) prevents deadlock
B) prevents
Q20: Many system architectures support a(n) _ instruction
Q22: What happens when a thread calls P(
Q23: Which of the following statements about semaphores
Q24: Semaphores can be used for each of
Q25: If a thread attempts a P operation
Q26: Semaphore operations can be implemented in the
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