IT Career JumpStart: An Introduction to PC Hardware, Software, and Networking

Chapter 8

A Communications Framework

In This Chapter

• The need for a standard communications model
• The flow of data in the model
• The seven layers of the OSI model

com•mu•ni•ca•tion n : the transfer of information between two or more people or devices over a medium

Communication occurs all around us in many forms. Usually, when communication happens, it is between two things that can easily understand each other. For example, two people in the same country who speak the same language can communicate with little or no problem. The same can be said for species of birds. They understand each other. But not everyone speaks the same language, and there are thousands of types of birds. Needless to say, life and work can get difficult when communication ...