OSI Layer Concept | CCNA Networking Fundamentals

This video explains the OSI (Open Systems Interconnection) Model, which defines how data moves from one device to another in a network. You’ll learn all 7 layers — from Physical to Application — with examples of real protocols at each layer. This concept is the foundation of all CCNA and CCNP networking topics, helping you understand encapsulation, communication flow, and troubleshooting steps.

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What you'll learn:
7 layers of OSI model
Purpose of each OSI layer
Encapsulation & decapsulation process
Layer-wise protocol examples
OSI vs TCP/IP comparison
Troubleshooting using OSI model
CCNA & CCNP exam importance

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Видео OSI Layer Concept | CCNA Networking Fundamentals канала GuiNet