Which of the following describes the roles of devices in a WAN?（）

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

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？（）

what is the advantage of policing opposite to shaping？

問一個(gè)怎么樣的屬性，能讓路由不通告給任何的peer？

一堆交換機(jī)一個(gè)server、一個(gè)transpare，問配置prune在哪里配置？

SPT初始狀態(tài)之后的一個(gè)狀態(tài)是什么？

hsrp speak狀態(tài)是什么意思？

Refer to the exhibit.The network administrator is in acampus building distant from Building B.WANRouter is hosting a newly installed WAN link on interface S0/0.The new link is not functioning and the administrator needs to determine if the correct cable has been attached to the S0/0 interface.How can the administrator accurately verify the correct cable type on S0/0 in the most efficient manner?（）

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