Osi vs Tcp/Ip

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What is the purpose of an OSI model? The purpose of an OSI model is a standard that was created for networks to share information. This standard governs the way information is transmitted over different networks. The model also sets guidelines to those in the manufacturing industry that create and develop software and hardware that are all compatible with each other.
This paper will discuss and describe the 7 layers of the Open System Interconnection model (OSI model) and the layers of the Transport Control Protocol/Internet Protocol model (TCP/IP model), and explain the similarities and differences of each model.
The 7 layers of the OSI model consist of: The Application layer (layer 7), The Presentation layer (layer 6), The Session
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The Transport layer
Transport layers exist in both TCP/IP and OSI model. Even though both models have Transport layers they differ. The TCP/IP model consist of two standard transport protocols: Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). TCP uses a reliable data-stream protocol which is connected oriented and UDP uses a unreliable data-stream protocol which is connectionless oriented.

The Internet layer
The Internet layer is a group of protocols and specifications that are used to transport packets from the host across a network, the host specified by a network address (IP address)
The Link layer
The lower level layer of the TCP/IP model, this layer is used by a suite of protocols for the “Internet”. This is used to connect hosts or nodes to a network. This layer is compared to the “Data Link” layer and “Physical “ layer of the OSI model.
TCP/IP Application Layer VS OSI Application, Presentation and Session layer.
The similarities in both models are comparable but different at the same time. All though they exist in both, the approach each uses to construct applications is different. In the OSI model the Application layer, Presentation layer and Session layer correspond to the Application layer of the TCP/IP model. They somewhat do the same job but use different protocols, TCP/IP uses: FTP, SMTP, TELNET, DNS and SNMP where the OSI model uses: FTAM, VT, MHS,
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