⑤浏览器向服务器发送数据请求 ⑥浏览器解析收到的数据并显示 ⑦通信完成，断开TCP连接 A.②①④⑤③⑦⑥ B.②①⑤④③⑦⑥ C.②①④⑤③⑥⑦ D.②①④③⑤⑦⑥
68.TCP和UDP协议均提供了 （ ）能力, A.连接管理 B.差错校验和重传 C.流量控制 D.端口寻址
69.在Windows命令行窗口中使用（ ）命令可以查看本机DHCP服务是否己启用
A.ipconfig B.ipconfig /all C.ipconfig /renew D.ipconfig /release
70.下列无线网络技术中，覆盖范围最小的是（ ） A.802.15.1 蓝牙 B.802.11n 无线局域网
C.802.15.4 ZigBee D.802.16m 无线城域网
71-75.A project is a [temporary] （ ） of unique, complex, and connected activities having one goal or purpose and that must be completed by a specific time, within budget, and according to （ ）.
Project management is the process of scoping, planning, staffing，organizing, directing, and controlling the development of a(n) （ ） system at a minimum cost within a specified time frame.
For any systems development project, effective project management is necessary to ensure that the project meets the （ ） , is developed within an acceptable budget, and fulfills customer expectations and specifications. Project management is a process that starts at the beginning of a project, extends through a project, and doesn’t culminate until the project is completed.
The prerequisite for good project management is a well-defined system development process. Process management is an ongoing activity that documents, manages the use of, and improves an organization’s chosen methodology (the “process”)for system development. Process management is concerned with the activities, deliverables, and quality standards to be applied to （ ） project(s). A.task B.work C.sequence D.activity A.specifications B.rules
C.estimates D.designs A.perfect B.acceptable C.controlled D.completed A.deadline B.specification C.expectation D.requirement A.a single B.a particular C.some D.all
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