When deploying a BYOD deployment with Cisco ISE as a standalone CA, which component performs the role of root CA?

In a BYOD (Bring Your Own Device) deployment using Cisco Identity Services Engine (ISE) as a standalone Certificate Authority (CA), the role of the root CA is performed by the Primary Admin Node. This is because the Primary Admin Node is responsible for issuing and managing certificates within the ISE deployment.

In this context, the root CA is crucial for establishing trust among devices in the network. It creates and distributes certificates that authenticate devices as they connect to the network. The Primary Admin Node manages these certificates, ensuring that all devices can verify each other's identity through the root CA's signing capabilities.

The other components have specific roles but do not function as the root CA. For instance, the Policy Service Node focuses on applying the authentication and authorization policies, while the Monitoring Node mainly tracks and reports on network activity and compliance. An Active Directory Certificate Authority specifically pertains to environments leveraging Microsoft Active Directory for certificate services rather than Cisco ISE as a standalone CA. Thus, the Primary Admin Node is the correct choice for the role of root CA in this BYOD deployment scenario.