Answer: C, D
Active Directory (Integrated Windows Authentication)
Use this option for native Active Directory implementations. The machine on which the vCenter Single Sign-Onservice is running must be in an Active Directory domain if you want to use this
See Active Directory Identity Source Settings.
Active Directory as an LDAP Server
This optionis available for backward compatibility. It requires that you specify the domain controller
and other information. See Active Directory LDAP Server and OpenLDAP Server Identity Source
Use this option for an OpenLDAP identity source. See Active Directory LDAP Server and
OpenLDAP Server Identity Source Settings.
Use this option to add the local operating system as an identity source. You are prompted only for
the name of the local operating system. If you select this option, allusers on the specified machine
are visible to vCenter Single Sign-On, even if those users are not part of another domain.