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OSI Model
Last Updated: March 15, 2026
Ashish Pratap Singh
Medium Priority
7 min read
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1. Why Does the OSI Model Exist?
2. The 7 Layers Explained
Layer 1: Physical
Layer 2: Data Link
Layer 3: Network
Layer 4: Transport
Layer 5: Session
Layer 6: Presentation
Layer 7: Application
3. How Data Flows: Encapsulation and Decapsulation...
4. OSI vs TCP/IP Model
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