1. DATA COMMUNICATION
Lecture-10

2. Recap Of Lecture-9 Functions of Layers Transport Layer Session Layer
Presentation Layer

3. Presentation Layer

4. Functions of Presentation Layer
Translation
Encryption
Compression

5. Application Layer
Enables the user either human or software to access the network
It provides user interface and support for the services such as
Electronic mail
Remote File access and Transfer
Shared Database Management

6. Application Layer

7. Application Layer Functions
Network Virtual Terminal
File Transfer, Access & Management (FTAM)
Mail Services
Directory Services

8. Summary of Layer Functions

9. TCP/IP Protocol Suite
Transmission Control Protocol / Internetworking Protocol
Developed Prior to OSI Model
Widely used in the Internet Today

10. Layers in TCP/IP Protocol Suite
Physical
Data Link
Network
Transport
Application

11. TCP/IP Protocol Suite

12. Summary
Function Of Layers
TCP/IP Suit

13. Suggested Reading
Section3.2 ,3.3“Data Communications and Networking” 2nd Edition by Behrouz A. Forouzan

14. Recap of the OSI Model