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What’s a cookie? How do I protect myself on the web? And most importantly: What happens if a truck runs over my laptop?

For things you’ve always wanted to know about the web but were afraid to ask, read on.

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your computer. It’s a bit like mom’s phone number: just as the phone number tells an operator which house to route a call to so it reaches your mom, an IP address tells your computer which other device on the Internet to communicate with — to send data to and get data from.

Your browser doesn’t automatically know every IP address for the 35 billion (or more) devices on the planet that are connected on the Internet. It has to look each one up, using something called the Domain Name System. The DNS is essentially the “phone book” of the Web: while a phone book translates a name like “Acme Pizza” into the right phone number to call, the DNS translates a URL or web address (like “www.google.com”) into the right IP address to contact (like “74.125.19.147”) in order to get the information that you want (in this case, the Google homepage).

So when you type in “google.com” into your web browser, the browser looks up google.com’s IP address through a DNS and contacts it, waits for a response to confirm the connection, and then sends your request for google.com’s web page to that IP address. Google’s server at that IP address will then send back the requested web page to your computer’s IP address for your browser to display.

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CREDITS


Very Special Thanks To

Brian Rakowski, Ian Fette, Chris DiBona, Alex Russell, Erik Kay, Jim Roskind, Mike Belshe, Dimitri Glazkov, Henry Bridge, Gregor Hochmuth, Jeffrey Chang, Mark Larson, Aaron Boodman, Wieland Holfelder, Jochen Eisinger, Bernhard Bauer, Adam Barth, Cory Ferreria, Erik Arvidsson, John Abd-Malek, Carlos Pizano, Justin Schuh, Wan-Teh Chang, Vangelis Kokkevis, Mike Jazayeri, Brad Chen, Darin Fisher, Johanna Wittig, Maxim Lobanov, Marion Fabing Nicolas, Jana Vorechovska, Daniele De Santis, Laura van Nigtevegt, Wojtek Cyprys, Dudley Carr, Richard Rabbat, Ji Lee, Glen Murphy, Valdean Klump, Aaron Koblin, Paul Irish, John Fu, Chris Wright, Sarah Nahm, Christos Apartoglou, Meredith Papp, Eric Antonow, Eitan Bencuya, Jay Nancarrow, Ben Lee, Gina Weakley, Linus Upson, Sundar Pichai & The Google Chrome Team


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