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[>_] ROOM · Networking
Network Basics
Understand how networks are structured and how data moves. Explore LANs, WANs, the 7 layers of the OSI model, and the TCP/IP stack.
Room tasks
1What is Networking
2The Anatomy of a Network
3The 7 Layers of the OSI Model
4The TCP/IP Stack & Data Encapsulation
Frequently Asked Questions
What is the OSI model?
The OSI model splits network communication into seven layers, from physical to application, so each function can be understood and troubleshot separately.
What is the difference between OSI and TCP/IP?
OSI is a seven-layer reference model, while TCP/IP is the four-layer model actually used on the internet. Layers map roughly between them.
Why do security professionals learn the OSI model?
It helps place attacks and defenses at the right layer. This beginner-friendly Codelivly room is free and builds the networking base for security careers.