This document provides an overview of the TCP/IP model and compares it to the OSI model. It discusses the purpose of each layer in both models, from the physical layer up to the application layer. Key concepts covered include protocol data units, encapsulation, de-encapsulation, and how data is encapsulated and de-encapsulated as it travels across a network. The presentation aims to explain the layered network models and how data is transmitted at each level.

1. Concept of TCP/IP
KHNOG 25 January, 2017
Presented by: Mom Sothea
IP Core Network Planning & Design Engineer @ Ezecom Limited &
AEU Cisco Instructor
Email: sotheamom518@gmail.com/ Skype:npic.sothea

2. Agenda
v The Purpose of the OSI model
v The Physical Layer of the OSI model
v The Data Link Layer of the OSI model
v The Network Layer of the OSI model
v The Transport Layer of the OSI model
v The Session Layer of the OSI model

3. v The Presentation Layer of the OSI model
v The Application Layer of the OSI model
v The Purpose of TCP/IP stack
v Compares the TCP/IP stack to the OSI model
v Describe Protocol data units
v Encapsulation
v De-Encapsulation
v Encapsulation and De-Encapsulation Across a Network

4. Why a Layered Network Model?
v Reduces complexity
v Standardizes interfaces
v Facilitates modular engineering
v Ensures interoperable technology
v Accelerates evolution
v Simplifies teaching and learning
Appication
Presentation
Session
Transport
Network
Data Link
Physical

5. PDU Names

6. Layer 1: The Physical Layer
Binary Transmission:

7. Layer 2: The Data Link Layer

8. Layer 3: The Network Layer

9. Layer 4: The Transport Layer

10. Layer 5: The Session Layer

11. Layer 6: The Presentation Layer

12. Layer 7: The Application Layer

13. TCP/IP Stack

14. TCP/IP Stack vs the OSI Model

15. Protocol Data Units

16. Encapsulation

17. De-Encapsulation

18. Encapsulation and
De-Encapsulation Across a Network