题目内容

The following pair of processes share a common variable X.X is set to 5 before either process begins execution. As usual, statements within a process are executed sequentially, but statements in process A may execute in any order with respect to statements in process B.How many different values of X are possible after both processes finish executing?

A. two
B. three
C. four
D. eight

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The program follows to use a shared binary semaphore T.T is set to 0 before either process begins execution and, as before, X is set to 5.Now, how many different values of X are possible after both processes finish executing?

A. one
B. two
C. three
D. four

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All processes share a semaphore variablemutex, initialized to 1. Each process must execute wait(mutex) before entering the critical section and signal(mutex) afterward.Suppose a process executes in the following manner.

A. a deadlock will occur
B. processes will starve to enter critical section
C. several processes maybe executing in their critical section
D. all of the mentioned

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Semaphores are mostly used to implement ____________

A. System calls
B. IPC mechanisms
C. System protection
D. None of the mentioned

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The bounded buffer problem is also known as ____________

A. Readers – Writers problem
B. Dining – Philosophers problem
C. Producer – Consumer problem
D. None of the mentioned

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A. two B. three C. four D. eight

The program follows to use a shared binary semaphore T.T is set to 0 before either process begins execution and, as before, X is set to 5.Now, how many different values of X are possible after both processes finish executing?

All processes share a semaphore variablemutex, initialized to 1. Each process must execute wait(mutex) before entering the critical section and signal(mutex) afterward.Suppose a process executes in the following manner.

Semaphores are mostly used to implement ____________

The bounded buffer problem is also known as ____________

A. two
B. three
C. four
D. eight