Thanks, ShagCA.
The beauty of a Mac, and the reason I trashed all my PC's almost two decades ago has always been that I have never needed to be under the hood which is the Windows culture. I have no idea how to ping a computer although I think I can easily figure it out.
The reality that OSX is suddenly not plug-and-play like it always has been is of concern to me. I don't believe I have to mess around with DNS on the OSX and get that deep in order to get the OSX to see and recognize the name of a PC on the same WiFi.
I am using the Microsoft Remote Desktop for OSX while my OSX is on the same WiFi as the host computer is. And it readily works if I provide the IP address assigned to the host computer so I am pretty sure if I went under the hood and pinged that IP address it would bounce back.
Is there a way on OSX that I can see, through OSX, which computers are on a given WiFi? In Windows you just click on Network and it shows all the computers on the same network. I have not found the same feature on my Mac.
Farzad