four switches， which one will be root switch.（no pic）.

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

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

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

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

兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？

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

what is four ospf area type？

如何實(shí)現(xiàn)擁塞避免？

What is method list for configure aaa？