Select all that apply.

• A

  An SDN controller uses federated routes between BGP autonomous systems.

• B

  An SDN controller uses northbound APIs to manage applications and business logic.

• C

  An SDN controller uses southbound APIs to manage flow control to the switches and routes in the network.

• D

  An SDN controller uses federated data between SDN controller domains.

• E

  An SDN controller functions as a gateway for the virtual machines in the SDN.