(Unicast, broadcast and multicast)[http://www.erg.abdn.ac.uk/users/gorry/course/intro-pages/uni-b-mcast.html]
- Unicast:
- A piece of information is sent from one point to another point, just one sender and one receiver.
- Broadcast
- A piece of information is sent from one point to all other points. Just one sender, multiple receivers.
- Multicast:
- A piece of information is sent from one or more points to a set of other points. May be one or more senders and may be no receivers or any number of receivers.