Crash Course Computer Science #29: The Internet

This video [11:57] focuses on the Internet and how it works. Specifically, how that stream of characters you punch into your browser's address bar, like "youtube.com", return this very website. We're talking in a broader sense about that massive network of networks connecting millions of computers together, not just the World Wide Web, which is a portion of the Internet. We're going to focus on how data is passed back and forth - how a domain name is registered by the Domain Name System, and how the data requested or sent gets to the right person in little packets following standard Internet Protocol (IP). We'll also discuss two different approaches to transferring this data: Transmission Control Protocol (TCP), when we need to be certain no information is lost, and User Datagram Protocol (UDP), for those time-sensitive applications.