【名词&注释】
网络结构(network structure)、结构化(structured)
[判断题]静态路由可随网络结构的变化而变化。()
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举一反三：
[单选题]数据字典是在结构化分析方法中的重要文档。数据字典的组成内容之一就是对加工的描述，常用的加工描述方法(6)。
A. 判定树和判定表
B. 有结构化语言和判定树
C. 有结构化语言和判定树和判定表
D. 只有结构化语言
[单选题]Frame. Relay is simplified form. of(71), similar in principle to(72), in which synchronous, frames of data are routed to different destinations depending on header information.Packets are routed throught one or more Virtual Circuits known as(73)Most Virtual Circuits are(74), which means that the network provider sets up all DLCI connections at subscription time.(75)are also part of the Frame. Relay specification. They privide a link that only lasts only as long as the session.
A. Datagram Switching
B. Datagram Routing
C. Packet Switchig
D. packet Routing
[单选题]Input data from keyboard are stored in(71) for processing.
A. modem
B. bus
C. memory
D. printer
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