CCNA: Cisco Certified Network Associate — Question 708

What is a function of a northbound API in an SDN environment?

Answer options

• A. It relies on global provisioning and configuration.
• B. It upgrades software and restores files.
• C. It supports distributed processing for configuration.
• D. It provides orchestration and network automation services.

Correct answer: D

Explanation

The correct answer is D because a northbound API is designed to enable communication between the SDN controller and applications, facilitating orchestration and automation. Options A, B, and C refer to functions that are not specific to northbound APIs, which focus on application-level interactions rather than provisioning, software upgrades, or distributed processing.