---
title: "Discussion on \"Why the OSI Model Diagram\nin Your Textbook Is Incomplete\" | Hashnode"
description: "Discussion on \"Why the OSI Model Diagram\nin Your Textbook Is Incomplete\". The OSI diagram in your textbook is incomplete. Walk a PDF through all 7 layers and finally understand how networks work."
url: "https://hashnode.com/posts/why-the-osi-model-diagram-in-your-textbook-is-incomplete/6a1426f67d85e6a1afc25a46"
---

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# [Why the OSI Model Diagram in Your Textbook Is Incomplete](https://tirthaklikhar.hashnode.dev/why-the-osi-model-diagram-in-your-textbook-is-incomplete?utm_source=hashnode&utm_medium=feed)

The OSI diagram in your textbook is incomplete. Walk a PDF through all 7 layers and finally understand how networks work.

May 25 · 9 min read · tirthaklikhar.hashnode.dev  
Updated May 26  
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## Written by

[Tirthak Likhar](https://hashnode.com/@tirthak10)

@tirthak10 · Pune, India

  
[View profile](https://hashnode.com/@tirthak10)

I build SOC labs, break things deliberately, and write about what I find.

CSE student and aspiring SOC analyst. I write about building security labs, threat detection, and the honest experience of learning blue team cybersecurity from the ground up.

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