Final answer:
If a "release" call is made when the semaphore count is at its max value, the call has no effect.
Step-by-step explanation:
When a "release" call is made on a semaphore, the count of the semaphore is incremented by 1 and another waiting process may be allowed to acquire the semaphore.
However, if the semaphore count is already at its maximum value, the "release" call has no effect because the maximum limit has been reached. In other words, the count will not exceed the maximum value.
For example, if a semaphore has a maximum count of 5 and the current count is also 5, a "release" call will not change the count, and no additional process will be allowed to acquire the semaphore.