Setting up a trust relationship between Tableau Server and the Kerberos Key Distribution Center (KDC) Establishing a trust relationship between Tableau Server and the Kerberos KDC is crucial for Kerberos authentication. This involves configuring the server to properly communicate with the KDC, allowing it to request and receive Kerberos tickets for authenticated users, thereby enabling seamless SSO functionality. Option A is incorrect as installing third-party SSO software is not necessary for Kerberos authentication, which is a built-in capability. Option C is incorrect because giving all users administrative privileges is unrelated to Kerberos authentication and would be a security risk. Option D is incorrect as enabling anonymous access would undermine the security principles of Kerberos authentication, which relies on verified identity tickets.