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  3. BGP is an inter-autonomous system routin

BGP is an inter-autonomous system routin

考试题库2022-08-02  33
问题 BGP is an inter-autonomous system routing protocol；it is designed to be used between multiple autonomous（　　）.BGP assumes that routing within an autonomous system is done by an intra-autonomous system routing protocol.BGP does not make any assumptions about intra-autonomous system（　　）protocols employed by the various autonomous systems.Specifically，BGP does not require all autonomous systems to run the same intra-autonomous system routing protocol.BGP is a real inter-autonomous system routing protocol.It imposes no constraints on the underlying Internet topology.The information exchanged via BGP is sufficient to construct a graph of autonomous systems connectivity from which routing loops may be pruned and some routing（　　）decisions at the autonomous system level may be enforced.The key feature of the protocol is the notion of Path Attributes.This feature provides BGP with flexibility and expandability.Path（　　）are partitioned into well-known and optional.The provision for optional attributes allows experimentation that may involve a group of BGP（　　）without affecting the rest of the Internet.New optional attributes can be added to the protocol in much the same fashion as new options are added to the Telnet protocol，for instance.问题1选项A.routersB.systemsC.computersD.sources问题2选项A.routingB.switchingC.transmittingD.receiving问题3选项A.connectionB.policyC.sourceD.consideration问题4选项A.statesB.searchesC.attributesD.researches问题5选项A.routersB.statesC.metersD.costs
选项
答案
解析 参考答案：B、A、B、C、A
BGP是自治系统间的路由协议；它被设计用于多个自治（）之间。BGP假定自治系统的路由通过内部自治系统的路由协议。BGP不会做出任何假设内部自治系统采用的不同的自治系统（）协议。具体而言，BGP不需要所有的自治系统运行在相同的内部自治系统路由协议。
BGP是真正自治系统间的路由协议。它规定，对互联网的基本拓扑没有限制。信息交换通过协议足以建立一个自治系统连接图，在自治系统间可执行路由环路的修剪和一些路由（）。
路径属性的概念是协议中的关键功能。此功能提供了灵活性和可扩展性。路径（）分为知名的和可选。提供可选的属性，允许试验可能涉及一组BGP（）不影响其余的互联网。例如：在许多相同的方式中，新的可选属性可以作为的新的通讯协定添加到该协议中。
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软件水平考试初中高级

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