O'Reilly logo

Cisco Networking Simplified, Second Edition by Paul Della Maggiora, Neil Anderson, Jim Doherty

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter . How Computers Communicate

The OSI Model

At some point, everyone involved with networking comes across a reference to the Open Systems Interconnection (OSI) seven-layer model. Because this model provides the architectural framework for all of network and computing communication, it’s a good place to start. Even if you don’t ever plan on setting up your own network, being familiar with this model is essential to understanding how it all works.

The OSI seven-layer model describes the functions for computers to communicate with each other. The International Organization for Standardization (ISO) published this model in 1984 to describe a layered approach for providing network services using a reference set of protocols called OSI. The basis ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required