Certified Network Defender (CND) — Question 129

Which of the following connects the SDN controller and SDN networking devices and relays information from network services to network devices such as switches and routers?

Answer options

• A. Southbound API
• B. Eastbound API
• C. Westbound API
• D. Northbound API

Correct answer: A

Explanation

The Southbound API is responsible for the communication between the SDN controller and the network devices, allowing for control and management. The Eastbound and Westbound APIs are typically not used in this context, while the Northbound API connects the controller to applications and services instead.