What is the role of a fabric wireless LAN controller in an SD-Access deployment?

In an SD-Access deployment, the fabric Wireless LAN Controller (WLC) is responsible for managing fabric-enabled Access Points (APs). This includes configuring the APs and overseeing their operation within the fabric. Crucially, it also forwards client registration and roaming information to the Control Plane Node (CPN). The CPN then uses this information to update the host tracking database and ensure seamless mobility for wireless clients across the fabric. The other options are incorrect because: The fabric WLC does not coordinate autonomous nonfabric APs; its focus is on fabric-enabled devices. While the WLC provides data, the assurance engine role is typically handled by a separate component like Cisco DNA Center's Assurance feature. The WLC facilitates client onboarding, but it's not exclusively dedicated to this task, nor does it directly onboard clients on nonfabric APs within the fabric.