Router R1, a branch router, connects to the Internet using DSL. The engineer plans to use a configuration with a dialer interface. The answers list a feature and interface on which the feature could be configured.<br /> Which combinations accurately describe the interface under which a feature will be configured?()
A、PPP on the ATM interface
B、VPI/VCI on the dialer interface
C、IP address on the ATM interface
D、CHAP on the dialer interface