AAA, NAC, Guest Access & BYOD

Environment : All ClearPass versions.

Q: What is Profile and Posture Updates is used for?
A: It is used to update supported AntiVirus, Antispyware, Windows Hot Fixes, End point finger prints for profiling (MAC OUI). This does not include CPPM updates. 

Q: What is the frequency of these updates? Is it possible to update manually?
A: CPPM checks for these updates on an hourly basis. The frequency of updates cannot be configured. However one can manually update by clicking on "Check Status Now" under Administration » Agents and Software Updates » Software Updates.

Q: How is it managed in a cluster, does each of the server handle this on its own?
A: Only the publisher has to be updated. Publisher pushes these updates to all the subscribers in the cluster.