The Internet Crash Course Computer Science 29

Today we're going to talk about how the Internet works Specifically how that stream of characters you punch into your browser's address bar like youtube com return this very website Just to clarify 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 and our topic for next week Today 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 of course how the data requested or sent gets to the right person in little packets following standard Internet Protocol or IP We'll also discuss two different approaches to transferring this data Transmission Control Protocol or TCP when we need to be certain no information is lost and User Datagram Protocol or UDP for those time sensitive applications - because nobody wants an email with missing text but they also don't want to get lag-fragged in their favorite first person shooter Want to run traceroute on your computer See directions below Remember you can replace dftba com with whatever website you want Traceroute on Windows 1 Press the Start Button 2 Type CMD and press Enter 3 In the Command Prompt type tracert dftba com Traceroute on Mac 1 Click on the Go drop down menu 2 Click on Utilities 3 Open Terminal 4 Type traceroute dftba com Traceroute on Linux 1 Open Terminal by typing CTRL Alt T 2 Type traceroute dftba com Produced in collaboration with PBS Digital Studios a http 3A 2F 2Fyoutube com 2Fpbsdigitalstudios a Want to know more about Carrie Anne a https 3A 2F 2Fabout me 2Fcarrieannephilbin a The Latest from PBS Digital Studios a https 3A 2F 2Fwww youtube com 2Fplaylist 3Flist 3DPL1mtdjDVOoOqJzeaJAV15Tq0tZ1vKj7ZV a Want to find Crash Course elsewhere on the internet Facebook - a https 3A 2F 2Fwww facebook com 2FYouTubeCrash a Twitter - a http 3A 2F 2Fwww twitter com 2FTheCrashCourse a Tumblr - a http 3A 2F 2Fthecrashcourse tumblr com a Support Crash Course on Patreon a http 3A 2F 2Fpatreon com 2Fcrashcourse a CC Kids a http 3A 2F 2Fwww youtube com 2Fcrashcoursekids a

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