You use the Administration console to modify the domain`s security realm. After deleting the default authentication provider, you add a single authentication provider for iplanet LDAP. You then try to reboot your servers with the weblogic user but they all fail to start due to authentication errors. Identify two possible causes. (Choose two.) 

Answer options:

A. The weblogic user does not exist in iplanet.
B. The Administrators group does not exist in iplanet.
C. A domain must include the default authentication provider.
D. Iplanet is not a supported LDAP implementation.
E. LDAP providers cannot be included in the default security realm.

AB