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Which of the following describes the roles of devices in a WAN?（）
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?（）
Local Preference？
如何實現擁塞避免？
What field in IP packet is used for classification by QOS？
Refer to the exhibit.Which statement describes DLCI 17?（）
How should arouter that is being used in a Frame Relay network be configured to avoid split horizon issues from preventing routing updates?（）
What is the three main step of using the QoS feature with MQC command line interface？
When upgrading the IOS image,the network administrator receives the exhibited error message.What could be the cause of this error?（）