You need to verify if the installed SSL certificate for server01.contoso.com will work with your Lync/Skype for business system with MTLS.
Which certificates are valid? (Choose all that apply.)
A. Self-signed certificate with the FQDN of the server.
B. Certificate issued by an internal Enterprise CA including the FQDN of the server.
C. Certificate issued by a third-party including the HTTPS name (mail.contoso.com).
D. Third-party certificate including the FQDN of the server.
