CCDE: Cisco Certified Design Expert (Practical) — Question 66

The controller has a global view of the network, and it can easily ensure that the network is in a consistent and optimal configuration. Which two statements describe a centralized SDN control path? (Choose two.)

Answer options

• A. It significantly improves the latency when performing reactive handling of PACKET_IN events
• B. Integrating smart NIC capabilities on the local host level is made easier through rest APIs
• C. A centralized controller can support all southbound APIs, which allows for easy integration with legacy equipment
• D. It is highly-available by design with no single-point-of-failure risks present
• E. Scaling of the centralized controller cluster is challenging for services like DHCP and load-balancing

Correct answer: C, E

Explanation

Option C is correct because a centralized controller supports all southbound APIs, making it easier to integrate with existing legacy systems. Option E is also correct as it highlights the challenges faced in scaling the centralized controller cluster for specific services like DHCP and load-balancing. The other options either misrepresent the capabilities of a centralized SDN control path or are not relevant to the question asked.