单项选择题
A.ppp authentication chap pap
B.pppoe authentication chap pap
C.ppp authentication chap ppp authentication pap
D.pppoe authentication chap pppoe authentication pap
单项选择题 Which set of commands allows PPPoE dynamic interfaces to use a profile called config-info?（）
多项选择题 What are the two stages of PPP over Ethernet?（）
单项选择题 The ERX Edge Router is configured for PPP over Ethernet without using VLAN tagging. How many PPP over Ethernet major interfaces can be configured per port?（）