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國立政治大學 2025 · 考試 · 第 20 題

Which of the following statements is true?

(A)
A counting semaphore can never be used as a binary semaphore.
(B)
A binary semaphore can never be used as a counting semaphore.
(C)
Counting semaphores can be used to control access to a resource with a finite number of instances.
(D)
Spinlocks can be used to prevent busy waiting in the implementation of semaphore

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