Title: Module 2 Introduction
Course: CNT 2001 Computer Networks & Communications > Section: Module 2 The OSI and TCP/IP Models

Introduction

Network technology is designed and expressed using logical models. The two major logical network models are the OSI model and the TCP/IP model. We will explore the structure of both models, and we will compare the OSI and the TCP/IP models with each other. We will discuss the concepts of layering and encapsulation so that we see how the various layers of the models support each other in the overall resultant model.

Learning Objectives:

- Define the OSI Model.
- List the layers of the OSI Model.
- Describe the functions of the layers of the OSI Model.
- Describe how data moves up and down the OSI Model.
- Explain how headers function in the OSI Model.
- Define the TCI/IP Model.
- Compare the TCP/IP Model to the OSI Model.
- An alternate naming scheme for the layers of the TCP/IP Model.
- List some common protocols that occur at the various layers of the TCP/IP Model.
- Describe how data moves up and down the TCP/IP Model.

Readings and Resources

Textbook: The OSI and TCP/IP Models (Lesson 2)