题目内容

Which of the following may NOT be tourists’ expectations of travel agents?_______

A. They should be professional.
B. They should meet tourists’ needs.
C. They should solve tourists’ problems.
D. They should be able to handle any of tourists’ complaints.

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Which process can be affected by other processes executing in the system?

A. cooperating process
B. child process
C. parent process
D. init process

When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called?

A. dynamic condition
B. race condition
C. essential condition
D. critical condition

If a process is executing in its critical section, then no other processes can be executing in their critical section. This condition is called?

A. mutual exclusion
B. critical exclusion
C. synchronous exclusion
D. asynchronous exclusion

Which one of the following is a synchronization tool?

A. thread
B. pipe
C. semaphore
D. socket