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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?（）
DHCP SERVER在給一個網段設置POOL時，該網段路由器接口地址能不能放入POOL，能why，不能why。
QoS機制中的分類，采用ip數據包中的哪個字段？
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 four ospf area type？
什么是NAT？
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？（）
what is the advantage of policing opposite to shaping？
How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）