OSI model - Wikipedia
Hub Vs Switch Vs Router: Choosing the right device for the task!
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File:Router switch in OSI model.png - Wikimedia Commons
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Layer 2, 3, and 4 switching
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What are Hub Switch Router? – Network Devices Explained – A MarketPlace of Ideas
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BSI: IT-Grundschutz catalogues - 13th version 2013
What is Layer 3 Switch and How Does it Works?
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Computer Networks Demystified | Gateway
See the Big Picture Using the OSI Model - Set Up TCP/IP Networks - OpenClassrooms
Switches vs. Hubs (Basics)
Switch Layer 2 and Switch Layer 3
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Layer 2 vs Layer 3 Switch: Which One Do You Need? | FS Community
4 things everyone should know about network layers - Cohesive Networks
The OSI model explained and how to easily remember its 7 layers | Network World
