SPT初始狀態(tài)之后的一個狀態(tài)是什么？

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

如何實現(xiàn)擁塞避免？

Local Preference？

什么問題導(dǎo)致SERVER VTP密碼跟替他交換機VTP密碼不匹配？

hsrp speak狀態(tài)是什么意思？

當將多個交換機加入到MST region當中會發(fā)生什么（what happen）？

what is the disadvantage of policing？

A default Frame Relay WAN is classified as what type of physical network?（）

Refer to the exhibit.How many broadcast domains exist in theexhibited topology？（）