1. DATA COMMUNICATION
Lecture-7

2. Recap of Lecture 6 Ring Topology Transmission Modes
Categories of Networks

3. Overview of Lecture 7 Categories of Networks (MANs) Internetworks
The OSI Model

4. Metropolitan Area Networks

5. Internetworks

6. The OSI Model
A layered framework for the design of network systems that allows communication across all types of computer systems regardless of their underlying architecture

7. OSI Layers
Please Do not Touch Steve’s Pet Alligator

8. The OSI Model

9. Organization of Layers
Network Support Layers
Layers 1,2,3
User Support Layers
Layers 5,6,7

10. Exchange using the OSI Model

11. Summary
Categories of Networks (MANs)
Internetworks
The OSI Model

12. Suggested Reading
Section 2.5,3.1,3.2 “Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan