According to the VMware vRealize Operations Reference Materials, the users who are imported from an LDAP authentication source can access vSphere and other objects including third-party objects in vRealize Operations, as long as they have the appropriate permissions and roles assigned to them. The LDAP users can use their LDAP credentials to log in to vRealize Operations, and they can view and manage the objects that are within their scope of access. The other options are incorrect because they are either false or irrelevant. The credentials for the LDAP users are not stored in the central Postgres database of vRealize Operations, but in the LDAP server. The LDAP users are allowed to perform any actions in vRealize Operations that are permitted by their roles and permissions. The LDAP user password policy is not set by vRealize Operations, but by the LDAP server. References: Managing Users and Access Control in vRealize Operations; Authentication Sources; Give Administrator Access to AD or LDAP Users