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【单选题】
( )是国防的根本职能。A.
维护安定团结的政治局面
B.
打赢信息化战争
C.
维护国家安全利益
D.
保卫人民和平劳动
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举一反三
【判断题】Program-data dependence refers to the coupling of data stored in files and software programs that use this data such that changes in programs require changes to the data.
A.
正确
B.
错误
【简答题】In this seminar, you will learn how to use data in different programs.
【单选题】The relational database model requires the data be(110)through programs that don't rely on the position of the data in the database. This is in direct(111)to the other database mode, where the program...
A.
accessed
B.
moved
C.
read
D.
wrote
【单选题】The example of employer benefits programs is given to show that______.
A.
personal data are required to enjoy any social security program
B.
there is much to be done to improve employer benefits programs
C.
employer benefits programs will inevitably increase identity theft
D.
the disclosure of personal data to strangers is inevitable for most people
【单选题】下列关于网络拓扑结构的叙述中, 不正确的是()。
A.
常见的局域网拓扑结构有:环型、总线型与星型
B.
网络拓扑结构对网络性能的发挥起着比较重要的作用
C.
用户在组建局域网时, 可以任意的选择网络所使用的拓扑结构
D.
网络拓扑结构指的是网络中计算机与各种通信线路的连接形式
【单选题】The relational database model requires the data be(71)through programs that don't rely on the position of the data in the database. This is in direct(72)to the other database mode, where the program h...
A.
accessed
B.
moved
C.
read
D.
wrote
【单选题】下列有关网络拓扑结构的叙述中,正确的是( )
A.
星型结构的缺点是,当需要增加新的工作站时成本较高
B.
树型结构的线路复杂,网络管理也比较困难
C.
目前局域网中最常用的拓扑结构是星型结构
D.
网络的拓扑结构是指网络节点间的分布形式
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