When adding a repository to a federated repository configuration, which type of repository can be added only
using wsadmin commands?

A.
File repository

B.
LDAP repository

C.
SAML repository

D.
Database repository

Explanation:
Federated repositories
Supports multiple types of repositories such as file-based, LDAP, database, and custom. In WebSphere
Application Server Version 8.5, file-based and LDAP repositories are supported by the administrative console.
For database and custom repositories, you can use the wsadmin command-line interface or the configuration
application programming interfaces (API).

https://www.ibm.com/support/knowledgecenter/en/SSAW57_8.5.5/com.ibm.websphere.nd.doc/ae/
cwim_fedrepos.html