多项选择题
A. IP access routes
B. MTU size of the interface
C. number of PPPoE session
D. using CHAP for authentication
E. assigning the interface to a virtual router
单项选择题 Which configuration command causes a PPPoE subscriber to be connected to a captive portal?（）
单项选择题 How can you control which local IP address the ERX uses when communicating with a RADIUS server?（）
单项选择题 Which CLI command ensures that RADIUS packets are being sent to and received from the RADIUS server?（）