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单选题
OSPF is a link-state routing protocol。It is designed to be run internal to a single (71)system。Each OSPF router maintains an identical ()describing the autonomous system’s topology。From this database,a routing table is calculated by constructing a shortest-path ()。OSPF recalculates routes quickly in the face of topological changes,utilizing a minimum of routing () traffic。OSPF provides support for equal-cost multipath。An area routing capability is provided,enabling an additional level of routing protection and a reduction in routing protocol ()。
A
B
C
D
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答案:
解析:
题干中提到OSPF是一个链路状态路由协议,设计用于在单个自治系统内部运行。因此,空格中需要填写与"自治系统"相关的词语。选项A “autonomous” 表示自治的,符合题意。每个OSPF路由器维护一个描述自治系统拓扑的相同数据库,因此选择A。
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