For automatic user name mapping to occur for a CIFS and UNIX user name that are the same, you must do
what?

A.
Enter the CIFS user in the NIS database.

B.
Enter the user names in the /etc/hosts.equiv file.

C.
Use both a NIS server and a Domain Controller in the network.

D.
Nothing: mapping will occur if user name authentication is available.

Explanation:
https://library.netapp.com/ecmdocs/ECMP1196993/html/GUID-09C7812F-E6EA-47C6-AB79-
EAB803E7A8EB.html
If the user names in the UNIX password database are identical to the Windows names, you need not provide
the mapping information in the /etc/usermap.cfg file.