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what is the advantage of policing opposite to shaping？
The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）
What field in IP packet is used for classification by QOS？
hsrp speak狀態(tài)是什么意思？
兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？
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?（）
What is the next state of initial in spanning-tree protocol？
What is method list for configure aaa？
SPT初始狀態(tài)之后的一個狀態(tài)是什么？
four switches， which one will be root switch.（no pic）.