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[说明]某公司需开发一套通用信息管理系统。为保证开发进度和开发质量，对开发的全过程进行测试，重点对模块和系统性能进行测试。系统测试是针对系统中各个组成部分进行的综合性检验。（11）检测系统在异常情况下的承受能力；（12）检查系统对非法侵入的防范能力；（13）检查系统的容错能力。（11）~（13）的备选答案： A．恢复测试 B．安装测试 C．安全性测试 D．性能测试 E．强度测试 F．可靠性测试

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Both bus and tree topologies are characterized by the use of multipoint（）．For the bus，all stations attach，through appropriate hardware（）known as a tap，directly to a linear transmission medium，or bus．Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the（）．A transmission from any station propagates the length of the medium in both directions and can be received by all other（）．At each end of the bus is a（），which absorbs any signal，removing it from the bus． Full-duplex operation between the station and the tap allows data to be transmitted onto the bus and received from the（）．

A. tree
B. bus
C. star
D. ring

根据图2-1，将逻辑结构设计阶段生成的关系模式中的空(1)～(5)补充完整，然后给出各关系模式的主键和外键。（5）（）

TCP/IP (71) layer protocols provide services to the application (72) running on a computer. The application layer does not define the application itself, but rather it defines (73) that applications need--like the ability to transfer a file in the case of HTTP. In short,the application layer provides an (74) between software running on a computer and the network itself. The TCP/IP application layer includes a relatively large number of protocols, with HTTP being only one of those. The TCP/IP (75) layer consists of two main protocol options--the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP). （73）处填（）。

A. services
B. processes
C. applications
D. address

下图是HTML文件submit.html在IE中的部分显示效果。请完成下面submit.html中部分html代码。＜form action=/cgi-bin/post-query method=POST＞您的姓名：＜input type=text name=姓名＞＜br＞您的主页的网址：＜input type= text name=网址value=http：//＞＜br＞密码：＜input type=（）name=密码＞＜br＞＜input type=submit value=“发送”＞＜input type=（）value=“重设”＞＜/form＞＜input type=submit value=“发送”＞＜input type=（）value=“重设”＞

A. send
B. reset
C. restart
D. replace