Page 1 Overview of Data Communications and Networking PART IPage 2 Lecture OSIModel • The model • Functions of the layersPage 3 OSI ModelPage 4 OSI LayersPage 5 An Exchange Using the OSI ModelPage 6 Physical LayerPage 7 Data Link LayerPage 8 Data Link Layer ExamplePage 9 Network LayerPage 10 Transport Layer ExamplePage 11 Session LayerPage 12 Presentation LayerPage 13 Application LayerPage 14 Summary of Layer Functions