Drag the software-defined networking (SDN) layer on the left to the appropriate function on the right. (Each SDN layer may be used once, more than once, or not at all.)
This layer receives it requests from the application layer.
This layer is also known as the infrastructure layer.
This layer communicates with the control layer through what's called the northbound interface.
This layer provides the physical layer with configuration and instructions.
On this layer, individual networking devices use southbound APIs to communicate with the control plane.
