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DOD Model (Department Of Defence)

The Department Of Defence of United States played a role determining in TCP/IP domain. In order to include/understand the process of communication, the following model was produced and of the responsibility were allotted has each level . In the following way :

OSI Model

DOD Model

7

Application Layer

4

Process /Application

6

Presentation Layer

5

Session Layer

4

Transport Layer

3

Host to Host

3

Network Layer

2

InterNetwork

2

Data Link Layer

1

Network Access

1

Physical Layer

DOD Model divides the process of the communications into four principal components. Some of these principles are similar to those of OSI model, such as the use of information of control which contain addressing, the applications of origin and destination.



Author
Jean Théry

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