The TCP/IP Network Model HD

Go a bit more in-depth on the TCP/IP model. What are the layers, and what do they do? Why do we have so many of them? For a refresher on why network models exist: https://www.youtube.com/watch?v=6cG9qrKB9x0 0:00 - Intro 1:14 - 5-layer TCP/IP Model refresher 2:11 - Encapsulation 3:26 - Physical layer 4:58 - Data link layer 8:24 - Network/Internet layer 11:27 - Transport layer 14:37 - Application layer 17:42 - Check yourself