what is the disadvantage of policing？

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

What field in IP packet is used for classification by QOS？

如何實現(xiàn)擁塞避免？

當(dāng)將多個交換機(jī)加入到MST region當(dāng)中會發(fā)生什么（what happen）？

what is four ospf area type？

SPT初始狀態(tài)之后的一個狀態(tài)是什么？

Refer to the exhibit.The network administrator is in acampus building distant from Building B.WANRouter is hosting a newly installed WAN link on interface S0/0.The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface.How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner?（）

The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（） 

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？（）