1. OSI Layers
T S Pradeep Kumar!
VIT Chennai!
http://pradeepkumar.org
2. 7 Layers of OSI
ISO is the organization and
OSI is a Model!
There are totally 7 layers !
Headers and tailers are added
at each layers !
Headers are added to the data
at the Layers 6,5,4,3,2!
Trailers are added usually at
Layer 2.
7. Application Layer
6. Presentation Layer
5. Session Layer
4. Transport Layer
3. Network Layer
2. Data Link Layer
1. Physical Layer