When the counter is_________ , the semaphore blocks other threads from accessing the semaphore until the semaphore has been released by another thread

____________________ describes a language's correct word usage, spelling, and punctuation.

Fill in the blank(s) with the appropriate word(s).

____________________ protects an image, word, slogan, symbol, or design used to identify goods or services.

Fill in the blank(s) with the appropriate word(s).