This is the second class in our FREE 8-part #ExtremeAcademy Live course. Watch the course to learn about the fundamentals of cloud networking technology, wireless communication, and the Internet.
Today, we’ll discuss:
- OSI Layers 5, 6, and 7 - the start of the journey. Discover what happens when you hit 'send' or 'enter'?
- DNS for everyone
- OSI Layer 4 UDP vs. TCP - it's quite simple, really.

Chapters
0:00 Introduction
19:30 Protocol Stack
37:03 Open Systems Interconnection (OSI)
1:15:36 Transport Layer
1:34:05 Transmission Control Protocol (TCP)

Download the homework from Meeting Pulse - https://meet.ps/extremeacademylive.

If you missed Part One, watch it here – https://www.youtube.com/playlist?list=PLvQMiI4QwvHS2K7wJGMIG5WEDcT7OAbm_.

Learn more about the course - https://academy.extremenetworks.com/extreme-academy-live-registration/.