TCP/IP Model

Transmission Control Protol/Internet Protocol (TCP/IP) suite was created by the Department of Defense (DoD) to ensure and preserve data integrity. If designed and implemented correctly a TCP/IP network can be a truly dependable and resilent one.

TCP/IP Model v/s OSI Model

TCP/IP (DoD) Model	OSI Model
Process/Application	Application Layer Presentation Layer Session Layer
Host-to-Host	Transport Layer
Internet	Network Layer
Network Access	Data Link Layer Physical Layer

TCP/IP or DoD Model has four layers, viz. Process/Application Layer, Host-to-host, Internet and Network Access Layer.

Process/Application Layer of DoD is same as Layer 5, 6 and 7 of OSI Model, which deals with the application to be used for data transfer, also data services like encryption and decryption and also controls user-interface specifications.

Host-to-Host is same as Layer 4 of OSI Model, which deals with the type of communication to be used like a reliable or unreliable, also provides error-free data delivery, handles packet sequencing and maintains data integrity.

Internet is same as Layer 3 of OSI Model, which deals with logical transmission of data packets over the entire network, handles the routing of packets among multiple network.

Network Access Layer is same as Layer 2 and Layer 1 of OSI Model, deals with the error notification and hardware addressing and defines protocols for the physical transmission of Data.

If Our Article Has Helped You, Consider Supporting Us, By Making A Small Contribution, Thank You