The OSI and TCP/IP models | CISSP |

The OSI and TCP/IP models | CISSP |

The OSI and TCP/IP models are frameworks used to understand network communications:

OSI Model (Open Systems Interconnection):

Conceptual framework used to understand network interactions.
7 Layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has specific functions and interfaces with the layers directly above and below it.
TCP/IP Model:

Practical framework used in real-world networking.
4 Layers: Link (Network Interface), Internet, Transport, and Application.
Simplifies the layers into more practical groupings compared to OSI.
Dominant model used for internet communications.
Both models help in understanding how data is transmitted over a network, but TCP/IP is more aligned with actual network protocols in use today.

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