单项选择题
A.aaa new-model
B.aaa telnet login
C.telnet authentication login
D.authentication telnet login
单项选择题 In a PPP over ATM service offering,which command inserts the user's host route into the routing table?（）
多项选择题 In a PPP over ATM service offering,which two methods are available for dynamically allocating an IP address to the customer's device?（）
单项选择题 When sending an LCP Configuration Request,what can the ERX Edge Router possibly negotiate?（）