I just done an exam on this type of thing, an example of a wide area network would be the internet. A wide area network consists of computers connected to each other over a large area. Thats all i needed on that particular topic. But im guessing you would need range of servers for it to work, computers with modems. A private wide area network could be the FBI database which can be accessed from any computer, but the requires a username and password.
Really crap answers i know, but i tried.
