<Li> IP over Avian Carriers was a humorous April fool's Request for Comments, issued as RFC 1149 . It was implemented in real life in 2001 . </Li> <Li> Extending the Internet to interplanetary dimensions via radio waves, the Interplanetary Internet . </Li> <P> Both cases have a large round - trip delay time, which gives slow two - way communication, but doesn't prevent sending large amounts of information . </P> <P> Apart from any physical transmission media there may be, networks comprise additional basic system building blocks, such as network interface controllers (NICs), repeaters, hubs, bridges, switches, routers, modems, and firewalls . Any particular piece of equipment will frequently contain multiple building blocks and perform multiple functions . </P>

What is not a common network architecture type