What is a Network?
Definition :
A computer network is a set of interconnected autonomous devices that communicate and share resources using standardized rules called communication protocols.
A network could be as large as the Internet or as small as your two computers at home, sharing files and printers
Two computers are interconnected if they are capable of exchanging information.
Warning :
Autonomy excludes master/slave-type systems.
A system composed of one unit that controls several slave units is not a network