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The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）
what is the disadvantage of policing？
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？（）
QoS Mechanisms：問在部署QoS中要用的3個mechanisms是什么？
Which of the following are key characteristics of PPP?（）
R1 will choose which path to reach 10.1.0.0？
As a CCNA candidate,you must have a firm understanding of the IPv6 address structure.Refer to IPv6 address,could you tell me how many bits are included in each filed?（）
當(dāng)將多個交換機(jī)加入到MST region當(dāng)中會發(fā)生什么（what happen）？
four switches， which one will be root switch.（no pic）.