Question: Q7.2 Semaphores 4 Points Consider a semaphore, S, which is initialized to 0, and two processes, P1 and P2, which are written as follows. P1:

Q7.2 Semaphores 4 Points Consider a semaphore, S, which is initialized to 0, and two processes, P1 and P2, which are written as follows. P1: printf("ABC "); signal(S); P2: wait(s); printf("XYZ "); What is the possible output if P2 is scheduled ahead of P1? Briefly explain your

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