Which FSSO discovery method transparently detects logged off users without having to rely on external features such as WMI polling?

Which two statement about the RADIUS service on FortiAuthenticator are true? (Choose two)

Which method is the most secure way of delivering FortiToken data once the token has been seeded?

You are a FortiAuthenticator administrator for a large organization. Users who are configured to use FortiToken 200 for two-factor authentication can no longer authenticate. You have verified that only the users with two-factor authentication are experiencing the issue.
What can couse this issue?

At a minimum, which two configurations are required to enable guest portal services on FortiAuthenticator?
(Choose two)