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

Refer to the exhibit.Which statement describes DLCI 17?（）

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

問一個怎么樣的屬性，能讓路由不通告給任何的peer？

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

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？（）

R1 will choose which path to reach 10.1.0.0？

如何實現擁塞避免？

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

When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）