A) 1  　        B) 2  　    　   C) 3           D) 4

　　(60) Which of the following operations belongs to message passing?____．
　　A) rea d and write     B) save and receive
　　C) wait and signal     D) P and V

　　(61) If file A has the capability of 724,the same group’s users of file A may do____．
　　A) read A only    B) write A  C) execute A     D) non-operation

　　(62) In which phase of the software engineering process is the Software Requirements Specification developed?____．
　　A) definition phase            B) engineering
　　C) maintenance                D) development phase

　　(63) The prototyping method is a dynamic design process,which requires people who use prototyping method to have the following capability of____．
　　A) proficient program expertise   B) immediately acquire requirement
　　C) coordinate & organize eloquently  D) handle tools smartly

　　(64) For relation R where primary key contains multiple attributes,no non-key attribute should be functionally dependent on a part of the primary key. This relation R is at least in____．
　　A) 1NF     　　 B) 2NF  　　   C) 3NF     　　 　 D) BCNF

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