Round Robin is like this lets say i got a domain called " zcworld.au" i got 3 download servers each download.zcworld.au : 10.10.2.1 download.zcworld.au : 221.2.32.123 download.zcworld.au : 10.10.2.5 if thats the Round Robin type of thing you meaning when you look up the download.zcworld.au its picks on of the server out of the list and gives you the IP to connect to so there is not 10,000 people trying to access one box and crash it ( i hope thats helps you out a bit ) heads up if not ....
