OSI Model Layer 1 - The Physical Layer

In this video, I discuss how a signal is sent down an ethernet cable. I also explain why ethernet uses wire pairs and why those pairs are twisted. This video is the first in a series of Networking fundamentals. 00:00 Intro 00:32 Theory - The OSI Model 02:49 Explaining the demo 04:21 Demo Time! 06:47 Why Ethernet wires are organized in pairs 09:26 Why Ethernet wire pairs are twisted Links referenced in this video: https://en.wikipedia.org/wiki/Ethernet_frame