A reference model is a virtual model which defines how communication should take place. It logically divides the processes which are required for the communication into layers. This concept is known ...

Getting a handle on the invisible part of your network—the protocols that are in use—can be of enormous value in helping you detect problems. So far, we've talked about the tangibles of your ...

Le modèle OSI (Open Systems Interconnection) est un standard de communication entre applications d'un réseau. Un modèle de référence est un cadre conceptuel permettant de comprendre les relations. Le ...

Whether it’s wired or wireless, most data communications today happens by way of packets of information travelling over one or more networks. But before these networks can work together, though, they ...

Afin de s'y retrouver au milieu des protocoles, et même de pouvoir en changer, on les hiérarchise par exemple en quatre couches dans le modèle TCP/IP. D'autres modèles plus complexes, comme le SNA ...