Which personas can a Cisco ISE node assume?

An organization is hosting a conference and must make guest accounts for several of the speakers attending.
The conference ended two days early but the guest accounts are still being used to access the network. What must be configured to correct this?

A customer wants to set up the Sponsor portal and delegate the authentication flow to a third party for added security while using Kerberos Which database should be used to accomplish this goal?

Refer to the exhibit:

Which command is typed within the CU of a switch to view the troubleshooting output?

Which Cisco ISE node does not support automatic failover?