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R3選擇哪一跳作為10.1.1.0的最優(yōu)路徑？為什么？
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Which of the following are key characteristics of PPP?（）
As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）
Which of the following describes the roles of devices in a WAN?（）
what is four ospf area type？
what is the disadvantage of policing？
Local Preference？
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？（）
When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）
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?（）
如何實(shí)現(xiàn)擁塞避免？