問(wèn)：R1：1.1.1.1 R2：2.2.2.2 為什么R1、R2之間PING不通？
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Refer to the exhibit.Which statement describes DLCI 17?（）
How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）
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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？（）
Local Preference？
four switches， which one will be root switch.（no pic）.
what is the disadvantage of policing？
what is the advantage of policing opposite to shaping？
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?（）