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Which of the following are key characteristics of PPP?（）
Which of the following describes the roles of devices in a WAN?（）
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?（）
When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）
what is the disadvantage of policing？
The following configuration line was added to router R1 Access-list 101 permit ip 10.25.30.00.0.0.255 any What is the effect of this access list configuration?（）
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？（）
什么問題導(dǎo)致SERVER VTP密碼跟替他交換機(jī)VTP密碼不匹配？
問一個(gè)怎么樣的屬性，能讓路由不通告給任何的peer？
The Frame Relay network in the diagram is not functioning properly.What is the cause of the problem?（）