What is the three main step of using the QoS feature with MQC command line interface？

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

SPT初始狀態(tài)之后的一個(gè)狀態(tài)是什么？

What is the next state of initial in spanning-tree protocol？

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

QoS機(jī)制中的分類，采用ip數(shù)據(jù)包中的哪個(gè)字段？

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

兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？

如何實(shí)現(xiàn)擁塞避免？

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?（）