CCNA: Cisco Certified Network Associate — Question 430

What is the function of a controller in controller-based networking?

Answer options

• A. It serves as the centralized management point of an SDN architecture
• B. It is a pair of core routers that maintain all routing decisions for a campus
• C. It centralizes the data plane for the network
• D. It is the card on a core router that maintains all routing decisions for a campus.

Correct answer: A

Explanation

The correct answer is A because the controller indeed functions as the centralized management point in Software-Defined Networking (SDN) architectures. Options B, C, and D are incorrect as they describe other components or functions that do not pertain to the role of the controller in a controller-based networking environment.