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A network administrator is troubleshooting the OSPF configuration of routers R1 and R2.The routers cannot establish an adjacency relationship on their common Ethernet link.The graphic shows the output of the show ip ospf interface e0 command for routers R1 and R2.Based on the information in the graphic,what is the cause of this problem?（）
When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）
Refer to the exhibit.What is the meaning of the term dynamic as displayed in the output of the show frame-relay map command shown？（）
Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（）
what is the advantage of policing opposite to shaping？
Which of the following describes the roles of devices in a WAN?（）
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What field in IP packet is used for classification by QOS？
當(dāng)將多個(gè)交換機(jī)加入到MST region當(dāng)中會(huì)發(fā)生什么（what happen）？
一堆交換機(jī)一個(gè)server、一個(gè)transpare，問配置prune在哪里配置？