CAST HIGHLIGHT - Survey - Standard application survey question for Authentication Mechanism

Which answer should be chosen for the survey question What is the current user authentication mechanism? (64 points) 

Explanation
If you  are unable to specify certificate solutions, then

Check whether your application is tied into LDAP with certificate (which is Enterprise AD)

or Single Sign on (which is SAML with certificates used by that process),

choose one of the above if valid.

Additional Resources

CAST Highlight Troubleshooting Guides

CAST Highlight Product Documentation

Zendesk Ticket Number 

24099