Computer Science · Operating Systems
Which of the following statements is NOT true with respect to semaphores?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A process must acquire a mutex lock before entering a critical section, which defines all semaphores.✓
- 2A semaphore is a signaling mechanism where processes perform wait() and signal() operations.
- 3It is an integer variable that, apart from initialization, is accessed only through two standard atomic operations.
- 4When one process modifies the semaphore value, no other process can simultaneously modify it.
Correct answer
A process must acquire a mutex lock before entering a critical section, which defines all semaphores.
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