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

兩ebgp鄰居發(fā)路由過來 ，哪些屬性重置？

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?（）

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？（）

How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）

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

如何實(shí)現(xiàn)擁塞避免？

what is four ospf area type？

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

R1 will choose which path to reach 10.1.0.0？