试题与答案

系统实施后的评价是指( )。A.确定系统的失败的原因,进行适当地调整 B.新系统

题型:单项选择题

题目:

系统实施后的评价是指( )。

A.确定系统的失败的原因,进行适当地调整

B.新系统的运行性能与预定目标的比较

C.系统转换前进行的评价

D.运行方式评价

答案:

参考答案:B

解析:在星型拓扑结构中,每个站由点到点链路连接到公共中心,任意两个站间通信均要通过公共中心。中心结点可以是中继器,也可以是局域网交换器。

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