Which of the following are key characteristics of PPP?（）

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

what is the advantage of policing opposite to shaping？

什么是NAT？

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

R1 will choose which path to reach 10.1.0.0？

問一個怎么樣的屬性，能讓路由不通告給任何的peer？

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?（）

what is the disadvantage of policing？

QoS機制中的分類，采用ip數(shù)據(jù)包中的哪個字段？