· OSI Model and OSI Layers

 

The open system Interconnection(OSI) was developed by the International Standards Organization (ISO) in 1983 to provide a conceptual model on which networks could be based. In the process of developing this framework, the ISO established a vocabulary that assisted engineers worldwide by giving them a common set of words to use to describe concepts they already understood and took for granted. The OSI model divides communications functions into seven layers. These layers aid in envisioning the structure of communications between applications and users on a network. They allow vendors and software engineers to work on one piece of the communication model at a time, following clear-cut guidelines.

 

Objectives:

 

At the end of this module you should be able to:

 

1. Identify and discuss the different OSI Layer

2. Examine the characteristics of each OSI Layer