Should we use smb or cifs to connect to a Linux NAS? If it is a Linux NAS (WD EX2100 or EX4100), should we use

smb://MyCloud


or

cifs://MyCloud


to connect to it if for some reason, it doesn't show up at the side panel of Finder?

The above line is to be typed into 

Finder -&gt; Go -&gt; Connect to Server


and for a Windows PC, I think it is to use smb. For an NAS, we can use either smb or cifs but which one should be used?
CIFS was a implementation of SMB created by Microsoft a long time ago, in a galaxy far, far away. 

Use SMB. 

This amazing blog post, and this one, will explain all.