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My InfoTech Journal: Decoding the Networking Enigma: OSI vs. TCP/IP Reference Models

My InfoTech Journal: Decoding the Networking Enigma: OSI vs. TCP/IP Reference Models The OSI (Open Systems Interconnection) Reference Model and the TCP/IP (Transmission Control Protocol/Internet Protocol) Reference Model: The OSI Reference Model and the TCP/IP Reference Model are both conceptual frameworks used to understand and standardize how different networking protocols and technologies interact. Here are some areas of comparison: 1. Number of Layers: OSI Model : It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and  TCP/IP Model : It has four layers: Network Interface, Internet, Transport, and Application. 2. L ayer Functionality: OSI Model : Tends to be more comprehensive and abstract, defining each layer's functions independently. TCP/IP Model : Reflects the actual implementation of the Internet and focuses on how protocols are used in practice. 3. Adoption / Use: OSI Model : Less commonly used in practice, but it is still valuab...
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My InfoTech Journal: Decoding the Networking Enigma: OSI vs. TCP/IP Reference Models

My InfoTech Journal: Decoding the Networking Enigma: OSI vs. TCP/IP Reference Models



The OSI (Open Systems Interconnection) Reference Model and the TCP/IP (Transmission Control Protocol/Internet Protocol) Reference Model:


The OSI Reference Model and the TCP/IP Reference Model are both conceptual frameworks used to understand and standardize how different networking protocols and technologies interact. Here are some areas of comparison:


1. Number of Layers:

  • OSI Model: It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and 
  • TCP/IP Model: It has four layers: Network Interface, Internet, Transport, and Application.


2. Layer Functionality:

  • OSI Model: Tends to be more comprehensive and abstract, defining each layer's functions independently.
  • TCP/IP Model: Reflects the actual implementation of the Internet and focuses on how protocols are used in practice.


3. Adoption / Use:

  • OSI Model: Less commonly used in practice, but it is still valuable for educational and theoretical purposes.
  • TCP/IP Model: Widely adopted and used as the de facto model for understanding and implementing the Internet and most modern networks.


4. Layers Mapping: OSI Model to TCP/IP Model

  • OSI Application Layer maps to TCP/IP Application Layer.
  • OSI Presentation Layer often combines with the Application Layer in TCP/IP.
  • OSI Session Layer is not directly equivalent but can be related to functions in the Application Layer.
  • OSI Transport Layer maps to TCP/IP Transport.
  • OSI Network Layer maps to TCP/IP Internet Layer.
  • OSI Data Link Layer and Physical Layer together roughly map to TCP/IP Network Interface Layer.


In summary, while both models serve as helpful tools for understanding networking concepts, the TCP/IP model is more closely aligned with real-world networking and is the predominant framework used in practice.


Disclaimer 

This article is a result of my personal research and is not a substitute for legal advice. Please consult your Information Legal Team, Information Security Team, Data Privacy, Ethics & Compliance, or Regulatory Team for the interpretation of  specific compliance requirements.


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