In the PPPoE application of ADSL , when the CPE side uses the MSR router + ADSL interface card for networking, and the CO side DSLAM uses ATM for uplink, which interfaces need to be PPPoE- related on the CO side centralized router ( PPPoE Server ) Configuration ?
A . ATM interface
B . Yi Tai Ethernet port
C . Virtual-Ethernet
D . Virtual-Template
E . dial number Interface
Answer: ACD
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