JNCIA-Cloud: Juniper Networks Certified Associate – Cloud — Question 3

You have a data center switching fabric that is comprised of Junos switches. You are using an API-based SDN implementation to manage the devices.
In this scenario, which statement is true?

Answer options

• A. The control plane is managed on the SDN controller
• B. The control and forwarding planes are separated
• C. The SDN controller makes routing and forwarding decisions
• D. The control plane remains on the individual devices

Correct answer: B

Explanation

The correct answer is B because in SDN, the control plane is indeed separated from the forwarding plane, allowing for centralized management. Option A is incorrect because the SDN controller does not manage the control plane; instead, it oversees the control functions. Option C is also wrong as the SDN controller does not directly make routing and forwarding decisions; it provides the rules to the switches. Option D is incorrect since the control plane is not confined to the individual devices in an SDN architecture.