A、use the command ip nbar protocol-discovery to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface

B、use the command match protocol rtp to allow identification of real-time audio and video traffic. Use the command ip nbar port-map to extend the NBAR functionality for well-known protocols to new port numbers

C、use the command match protocol to allow identification of stateful protocols. Use the command ip nbar port-map to attach the protocols to an interface

D、configure a traffic class. Configure a traffic policy. Attach the traffic policy to an interface. 

E、configure video streaming. Configure audio streaming. Attach the codec to an interface