CCNA: Cisco Certified Network Associate — Question 843

Which communication interaction takes place when a southbound API is used?

Answer options

• A. between the SDN controller and PCs on the network
• B. between the SDN controller and switches and routers on the network
• C. between the SDN controller and services and applications on the network
• D. between network applications and switches and routers on the network

Correct answer: B

Explanation

The correct answer is B because a southbound API facilitates communication between the SDN controller and the network devices such as switches and routers. Options A, C, and D incorrectly describe interactions that do not align with the function of a southbound API.