LPI Exam Questions

which setting in smb.conf is correct?

In order to use the user and group mappings stored in an LDAP directory, which setting in smb.conf is correct?

A.
idmap backend = ldap://ldap.example.com:636

B.
idmap backend = ldap:ldap://ldap.example.com:636

C.
idmap backend = ldap server = ldap://ldap.example.com:636

D.
idmap backend = ldap