Network Layer Tutorial

This tutorial will teach you about the layering models most commonly used in Networking: the Open Systems Interconnection (OSI) model, and the Transmission Control Protocol / Internet Protocol model (aka "TCP/IP suite").

The content in this tutorial is divided into three main sections:

An overview, describing the two models and their respective layers
A layer simulator, showing you firsthand how the network layers transform data messages and allowing you to see how configuration changes affect the transmissions in real time
Online quizzes, allowing you to test your knowledge with immediate feedback

You can start at any time, and navigate the tutorial site in any order you choose.

Important: This site is best used at 1024x768 resolution or better.