Which two statements define some of the general characteristics of SDN? (Choose two.)

Southbound interfaces such as OpenFlow are the APIs that sit between the SDN controller (control plane) and forwarding devices (data plane), allowing the controller to programmatically install and modify flow entries on switches.

OpenFlow is a southbound API, not a northbound API - it governs communication between the SDN controller and the underlying forwarding hardware, not between the controller and upper-layer applications.

Northbound interfaces connect the SDN controller to applications and orchestration layers above it, not to the data plane below - this choice incorrectly describes the northbound interface's position.

While separation of control and data planes is a true SDN principle, it is too broad and incomplete on its own to serve as one of the two most specific and technically accurate answers tested here alongside A and E.

OVSDB (Open vSwitch Database Management Protocol) is an application-level database management protocol used to configure and manage Open vSwitch instances, handling switch configuration state such as bridges, ports, and interfaces.