🌐 TCP/IP Model: The Architecture of the Internet

🌐 TCP/IP Model: The Architecture of the Internet

How does the practical internet function compared to the OSI model? Through the TCP/IP Model.

Here are the key points:
🔹 1. What is it?
Developed by DARPA in the 1970s, it is the practical 4-layer framework that powers the global internet.
🔹 2. The 4 Layers
Network Access Layer: Combines OSI's Physical and Data Link layers (hardware, cables, MAC).
Internet Layer: Handles IP Addresses and routing.
Transport Layer: Uses TCP and UDP for communication.
Application Layer: Combines OSI's top three layers (protocols like HTTP, DNS).
🔹 3. OSI vs. TCP/IP
OSI: 7 layers, conceptual blueprint for learning.
TCP/IP: 4 layers, practical standard used to run live networks.

🚀 Think of the OSI model as an architect's blueprint, while the TCP/IP model is the actual working building!
👇 Do you prefer the 4-layer TCP/IP model over the 7-layer OSI model? Let me know!

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