Comparing TCP/IP and OSI Models PDF
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This document compares the TCP/IP and OSI models, highlighting their structural differences, focus, approach, and usage in network communication. It details the functions of each layer in both models, and discusses application, transport, internet/network, and link/network interface layers. It's a good resource for understanding networking concepts.
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(4) Comparing TCP_IP to the OSI Model Exported Comparison of TCP/IP and OSI Models â—¦ Structural Differences â–ª TCP/IP model consists of four layers: Link, Internet, Transport, Application. â–ª OSI model has seven layers: Physical, Data Link, Network, Transport, Session, Pres...
(4) Comparing TCP_IP to the OSI Model Exported Comparison of TCP/IP and OSI Models â—¦ Structural Differences â–ª TCP/IP model consists of four layers: Link, Internet, Transport, Application. â–ª OSI model has seven layers: Physical, Data Link, Network, Transport, Session, Presentation, Application. â—¦ Focus and Approach â–ª TCP/IP is more practical, used in real-world network implementations and protocol development. â–ª OSI is theoretical, serving as a detailed reference model for understanding network functions. â—¦ Usage and Application â–ª TCP/IP is widely adopted in actual network communication systems. â–ª OSI model is used more as an educational tool to explain and understand how different network layers interact. Comparison of the layers â—¦ Application Layer â–ª TCP/IP - Combines OSI's Application, Presentation, and Session layers, handling high-level protocols, representation, and session management. â–ª OSI - Separate Application, Presentation, and Session layers, with more distinct functions for each layer. â—¦ Transport Layer â–ª TCP/IP Transport Layer deals with end-to-end communication (TCP, UDP). â–ª OSI Transport Layer ensures reliable data transfer and correct data sequencing. â—¦ Internet/Network Layer â–ª TCP/IP Internet Layer manages logical addressing and routing (IP). â–ª OSI Network Layer handles routing, addressing, and data packet forwarding. â—¦ Link/Network Interface Layer â–ª TCP/IP Link Layer is responsible for physical network hardware and media access control. â–ª OSI Data Link Layer provides node-to-node data transfer and error correction. â—¦ OSI-Specific Layers â–ª OSI Session Layer (absent in TCP/IP) manages sessions and dialogues between applications. â–ª OSI Presentation Layer (absent in TCP/IP) translates data for the Application Layer. â–ª OSI Physical Layer corresponds to the Network Interface Layer in TCP/IP, dealing with physical aspects of network communication.
