Which three statements are true about the tools used to configure Oracle Net Services?

Oracle Net Manager can be used to centrally configure listeners on any database server target.

The Oracle Net Configuration Assistant is only used when running the Oracle installer.

Enterprise Manager Cloud Control can be used to centrally configure net service names for any database server target.

Enterprise Manager Cloud Control can be used to centrally configure listeners on any managed database server.

The lsnrctl utility requires a listener.ora file to exist before it is started.

Oracle Net Manager can be used to locally configure naming methods on a database server.