1. [单选题]The main goals of Network are sharing computer resources .The resources include hardware, data and
A. gateway
B. router
C. software
D. server
2. [单选题]What is the definition of a path?
A. A sequence of vertices and the edges formed by each successive pair of vertices.
B. A walk with distinct vertices.
C. A walk with distinct edges.
D. None of the above
3. [单选题]一般来说,大多数(most)软件缺陷源于软件开发项目的 ______ 阶段。
A. 软件测试阶段
B. 程序编写和调试阶段
C. 需求和设计阶段
D. 加班工作期间
4. [单选题]【19】
A. get
B. set
C. trap
D. D)inform
5. [单选题]根据规范化理论,关系数据库中的关系必须满足其每一属性都是______。
A. 互相关联的
B. 互不相关的
C. 不可分解的
D. 长度可变的