I had always learned that the TCI/IP model has 4 layers, but in this question from Let’s Defender quiz the correct awnser is 3.
Can someone explain this to me? I’m starting a internship inside a Security Operations Center, so I want fully understand the basics and fundamentals.
OBS: Sorry about my bad english
The followed question down bellow:
Hi @matheus.limaandrade,
The TCP/IP networking model and the OSI model are just two ways of mapping aspects of the networking stack to “layers”, so it’s all relevant. The model you’ll likely use will just depend on what organization/company you work with, although in my experience OSI is more prevalent.
The below image visualizes it pretty well, but basically in the TCP/IP model, we condense two sections of the OSI model.
- The Data Link (Layer 2) and Physical (Layer 1) layers of the OSI model are just 1 layer in TCP/IP, the “Network Access” Layer.
- Similarly, the Session, Presentation, and Application layers (Layers 5-7) of the OSI model are condensed into just one layer, the Application Layer, of the TCP/IP layer.
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