1. 7-Layers of the OSI Model High-Tech Talk - Open Systems Interconnection Heather Boros Net 101 - Baker College, 2013

2. This presentation will show a representation of the OSI Model, Open Systems Interconnection Model, starting with the sending end of the data transmission and finishing at the receiving end of the transmission. AKA, let’s send an e-mail.

3. Layer 7 - Application Layer “The Application layer serves as the interface between the user and the network.”

4. Layer 6 - Presentation Layer “The Presentation layer translates the converted message data into a language the receiving computer can process.”

5. Layer 5 - Session Layer “The Session layer starts, stops and maintains the order of the connection.”

6. Layer 4 - Transport Layer “The Transport layer ensures proper and orderly delivery of the file or message.”

7. Layer 3 - Network Layer “The Network layer routes data from sender to receiver.”

8. Layer 2 - Data Link “The Data Link layer supervises the transmission of of the message by specifying the network and grouping the data.”

9. Layer 1 - Physical Layer “The Physical layer encodes the packets into a recognized signal that will carry them to the receiving computer.” “An example would be, analog signals being sent over a telephone line.”

10. Not over yet…. Now, lets run through this one more time, only this time, we will go backwards through the 7 layers. It is the only way to get the information to the receiver….

11. Layer 1 - Physical Layer “The Physical layer encodes the packets into a recognized signal that will carry them to the receiving computer.” “An example would be, analog signals being sent over a telephone line.”

12. Layer 2 - Data Link “The Data Link layer supervises the transmission of of the message by specifying the network and grouping the data.”

13. Layer 3 - Network Layer “The Network layer routes data from sender to receiver.”

14. Layer 4 - Transport Layer “The Transport layer ensures proper and orderly delivery of the file or message.”

15. Layer 5 - Session Layer “The Session layer starts, stops and maintains the order of the connection.”

16. Layer 6 - Presentation Layer “The Presentation layer translates the converted message data into a language the receiving computer can process.”

17. Layer 7 - Application Layer “The Application layer serves as the interface between the user and the network.”

18. Ahhhh, the end We have successfully sent an email from one person to another! Let’s do it again!