单选题The ERX Edge Router responds to a received PPP over Ethernet Active Discovery Initiation(PADI) with which message type?（）A PPPoE Active Discovery OfferB PPPoE Active Discovery InitiationC PPPoE Active Session ConfirmationD PPPoE Active Session Acknowle
题目
单选题
The ERX Edge Router responds to a received PPP over Ethernet Active Discovery Initiation(PADI) with which message type?（）
A
PPPoE Active Discovery Offer
B
PPPoE Active Discovery Initiation
C
PPPoE Active Session Confirmation
D
PPPoE Active Session Acknowledgment