Layers 7 through 4 are geared more to the application than the lower layers, which are designed to move packets from one place to another no matter what they contain. Layer 5 provides coordination.

A network topology is the basic design of a computer network. It is very much like a road map. It details how key network components such as nodes and links are interconnected. A network's topology is ...

Learn the fundamentals of the OSI model for computer networking in 100 seconds.

One of these was Ohio Scientific or OSI. [BradH] has an OSI Model 300 trainer — their first major product — and gives us a peek at it along with some history of the company. Companies like OSI ...