An administrator manages a cell that is configured to use an LDAP sewer for its user registry. But, there are several cases where he needs certain application servers to authenticate against a file based registry.
How can this be accomplished?

A.
From the deployment managers administrative console, use the application servers security configuration wizard for each application server to override the cell level registry.

B.
In the cell level security configuration panel, define LDAP authentication at the cell scope, and file based registry at the application server scope for the desired application servers.

C.
Configure Global security to use an LDAP registry and create a new security domain with a user realm definition for the file based registry and assign it to the desired application servers.

D.
Create a global security repertoire that includes a global definition for the LDAP registry as well as entries for each node is the cell. For those nodes that have application servers that require file based registry, include a registry override.