CCNA: Cisco Certified Network Associate — Question 842

Which interface enables communication between a program on the controller and a program on the networking device?

Answer options

• A. software virtual interface
• B. tunnel interface
• C. northbound interface
• D. southbound interface

Correct answer: D

Explanation

The southbound interface is designed to facilitate communication between the controller and network devices, making it the correct answer. In contrast, the northbound interface typically refers to the communication from the controller to applications, while the software virtual interface and tunnel interface serve different purposes in networking.