Discussion
A design gives a semaphore from a 1 kHz interrupt and takes it in a task that needs 1.2 ms per item. The outcome is
Answer: D
A thousand events a second against 833 the task can process is a sustained imbalance of a fifth, so the pending count rises until it reaches the semaphore's maximum and further events are lost silently. No buffer absorbs a sustained mismatch, and the arithmetic must be done before the design is committed.
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