Which Cisco ISE deployment model allows for up to 50 PSNs?

The deployment model that allows for up to 50 Policy Service Nodes (PSNs) is the one that separates the administration, monitoring, and policy service functions. In this model, each function is dedicated to a specific node, ensuring optimized performance and scalability. By utilizing separate nodes for administration, monitoring, and policy services, this configuration can effectively manage a large number of PSNs, maximizing the capabilities of the Cisco Identity Services Engine (ISE).

This approach allows organizations to scale their deployment according to their needs, accommodating devices and user access control requirements efficiently. The independent architecture helps in load balancing and enhances system reliability, as each node can be maintained or upgraded without affecting the entire system.

In contrast, other deployment models either combine specific functions on fewer nodes or do not support as many PSNs, which limits their scalability for larger enterprise environments. Thus, the separation of roles in this deployment model is key to achieving enhanced performance and large-scale implementation.