单项选择题
A. to identify valid numbers for incoming calls
B. to define the type of ISDN switch at the central office
C. to specify the list of outgoing phone numbers used by the router
D. to associate a dial configuration with a physical interface
E. to define interesting traffic that will enable the link
单项选择题 A network administrator needs to configure a router for a Frame Relay connection to a non-Cisco router. Which of the following commands will prepare the WAN interface for this connection?（）
多项选择题 Which statements are true about EIGRP successor routes?（）
单项选择题 You are troubleshooting a frame relay connection and wish to view the LMI traffic stats. Which command should you issue?（）