CCNA: Cisco Certified Network Associate — Question 502

What is the function of the controller in a software-defined network?

Answer options

• A. forwarding packets
• B. multicast replication at the hardware level
• C. making routing decisions
• D. fragmenting and reassembling packets

Correct answer: C

Explanation

The correct answer is C, as the controller in a software-defined network is responsible for making routing decisions to optimize traffic flow. Options A and D describe functions related to packet handling but do not pertain to the controller's role. Option B is incorrect because multicast replication is typically handled at the data plane, not by the controller.