When a client is connecting to the server an error occurs. Which two actions identify the source of the problem? (Choose two.)

A.
Issue the ENABLE PROCESSES ALL command.

B.
Issue theTEST PORT <port number> command.

C.
If communication methods were changed, issue the DISABLE command for the previous communication method.

D.
If network settings were changed, make sure client and server options files were changed to reflect the new settings.

E.
If the server communication settings were changed, either update the client communication options or revert to the previous method.