PowerCert Animated Videos is an excellent YouTube channel that releases clear and concise explanations of huge concepts in computer system hardware and networking. Over the last couple of years I regularly used the videos in EDpuzzle to produce short introductory assignments for my students.

Default Gateway Explained is the most recent video released by PowerCert Animated Videos. If they desire to connect computers to the Internet, the video does a terrific task of describing to students why a default entrance is an essential network element.

On a related note, heres the PowerCert video about DHCP and heres my presentation of how to develop Edpuzzle activities.