The user accesses the network through PPPOE dial-up, and the "Error 678" dialing failure error appears during dialing, and the IP address cannot be obtained. The possible reason is?

The user accesses the network through PPPOE dial-up, and the "Error 678" dialing failure error appears during dialing, and the IP address cannot be obtained. The possible reason is?
A . The user address pool is not configured in the BRAs example
B . LCP negotiation failed
C . Wrong username and password
D . Too many OLT service ports access users

View Answer

Answer: B