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How the Internet Works

How the Internet Works. CPA. Internet Addresses. How do you get to the school’s website? What you as the user sees is a web address or URL – Uniform Resource Locator. HTTP – H yper t ext T ransfer P rotocol Protocol is just a request to send information HTTP is the most common

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How the Internet Works

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  1. How the Internet Works CPA

  2. Internet Addresses • How do you get to the school’s website? • What you as the user sees is a web address or URL – Uniform Resource Locator

  3. HTTP – Hypertext Transfer Protocol • Protocol is just a request to send information • HTTP is the most common • HTTPS – the s means a secure site • Sub-domain • Sometimes required • Not always www; not all sites part of the web • www stands for world wide web • Domain name • The owner of the address • Name of the web server

  4. Domains • Top level domain – what kind of website is it • .com – commercial (business for profit) • .org – organization (most often non-profit) • .edu – educational site • .gov – government site • .mil – military site • .net -- network • File names are just pages on that website; not necessary to reach the website

  5. Parts of a URL

  6. What the computer sees • Computers don’t understand text • They transfer Internet into numbers. • Computers have an address called an IP Address, just like phones have phone numbers • 23.23.154.295

  7. Sending pictures and video • Send all your favorite pics to grandma • Break into smaller pieces or packets

  8. Transmission • Fiber – messages with one hand • DSL/Cable – message on the back of your hand • Wifi – message on head

  9. Activity – DNS Translation Table • Code.org – 23.23.160.123 • Thinkersmith.org – 64.14.68.10 • CSEDweek.org – 174.129.210.209 • CSisFun.com – 198.58.93.24 • Khanaacademy.org – 107.20.223.238

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