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     EduGorilla 
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    A semaphore S is an integer variable that, apart from initialization, is accessed only through two standard atomic operations: wait () and signal (). Thus which of the following in regards to semaphore is false.

    Options :-

    1. In does not require busy waiting
    2. It is of two types binary and counting
    3. In semaphore two processes cannot execute wait() and signal() at the same time.
    4. In Semaphore variable integer value can range over an unrestricted domain
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