如何實現(xiàn)擁塞避免？

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?（）

一堆交換機一個server、一個transpare，問配置prune在哪里配置？

what is the advantage of policing opposite to shaping？

QoS Mechanisms：問在部署QoS中要用的3個mechanisms是什么？

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 four ospf area type？

what is the disadvantage of policing？

R1 will choose which path to reach 10.1.0.0？

什么是NAT？