单项选择题
A. show radius
B. show aaa domain-map
C. show aaa statistics
D. show radius authentication server
单项选择题 Which CLI command displays the PPPoE customers that are currently connected to the ERX?（）
单项选择题 Which configuration command limits the number of connections supported on a single PPPoE major interface?（）
单项选择题 Which configuration command prevents a client from establishing multiple PPPoE connections from a single workstation?（）