Networking
12
stories in this section
-
OSI Model Explained
The 7 layers of the OSI model, from bottom to top, are Physical, Data Link, Network, Transport, Session, Presentation and Application. Each layer handles one job in moving data between devices, and the layers work together rather than one after another. This guide follows a single web request through the stack. For exam context, see…
-
Switches vs Routers vs Hubs
Device Forwards on Collision domains Broadcast domains Planning use Hub Nothing; repeats every signal out of every other port Whole device is a single shared domain Single domain, shared with everything attached Only for learning or legacy gear; a switch replaces it Switch Destination MAC address (data link layer) Each port is its own domain…