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Adventures of the packet Web Edition Aaron Kalin Copyright 1996 TriStar Pictures

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Aaron Kalin

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Aaron Kalin TK-688

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Aaron Kalin TK-688 Martinisoft

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An HTTP Request

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An HTTP Request

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An HTTP Request

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Ý An HTTP Request

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Ý An HTTP Request

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DNS Internet Ý Server Browser DNS

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DNS Internet Ý Server Browser Domain Name System

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache Router dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache Router dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar Nameserver dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar Nameserver dnsimple.com. A IN

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar Nameserver

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DNS Internet Ý Server Browser Local Cache ISP Router ƃ Registry Ɠ Registrar Nameserver dnsimple.com. 3600 IN A 50.31.209.238

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser dnsimple.com. (Query)

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DNS Internet Ý Server Browser dnsimple.com. (Query) 3600 (TTL)

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DNS Internet Ý Server Browser dnsimple.com. (Query) 3600 (TTL) IN (Class)

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DNS Internet Ý Server Browser dnsimple.com. (Query) 3600 (TTL) IN (Class) A (Record)

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DNS Internet Ý Server Browser dnsimple.com. (Query) 3600 (TTL) IN (Class) A (Record) 50.31.209.238 (Value)

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser UDP

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DNS Internet Ý Server Browser User Datagram Protocol

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DNS Internet Ý Server Browser User Datagram Protocol

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DNS Internet Ý Server Browser Speed! User Datagram Protocol

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DNS Internet Ý Server Browser Speed! No “guarantee” of delivery User Datagram Protocol

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DNS Internet Ý Server Browser Speed! No “guarantee” of delivery Commonly used in video games and DNS queries User Datagram Protocol

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DNS Internet Ý Server Browser TCP

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DNS Internet Ý Server Browser Transmission Control Protocol

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DNS Internet Ý Server Browser Transmission Control Protocol

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DNS Internet Ý Server Browser Transmission Control Protocol Slower than UDP

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DNS Internet Ý Server Browser Transmission Control Protocol Slower than UDP “Handshake” overhead

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DNS Internet Ý Server Browser Transmission Control Protocol Slower than UDP “Handshake” overhead Uses “Flow Control” to guarantee delivery

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DNS Internet Ý Server Browser The Internet

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser 50.31.209.238

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DNS Internet Ý Server Browser 50.31.209.238

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DNS Internet Ý Server Browser 50.31.209.238 Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Computer Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Computer Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Computer Router Open a socket

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DNS Internet Ý Server Browser 50.31.209.238 Computer Router Open a socket

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DNS Internet Ý Server Browser BGP

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DNS Internet Ý Server Browser Border Gateway Protocol

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DNS Internet Ý Server Browser Border Gateway Protocol

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DNS Internet Ý Server Browser Border Gateway Protocol Lets ISPs share their network routes

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DNS Internet Ý Server Browser Border Gateway Protocol Lets ISPs share their network routes Lets the router figure out the next destination to hand off the packet

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser Router

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DNS Internet Ý Server Browser Router Router

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DNS Internet Ý Server Browser Router Router 50.31.209.0/24

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DNS Internet Ý Server Browser Router Router 50.31.209.0/24 50.31.209.238

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DNS Internet Ý Server Browser Router Router Ý Server 50.31.209.0/24 50.31.209.238

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DNS Internet Ý Server Browser The Server

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DNS Internet Ý Server Browser Ý …

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DNS Internet Ý Server Browser Ý … 80 HTTP 443 HTTPS

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser Computer

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DNS Internet Ý Server Browser Computer Ý Server

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DNS Internet Ý Server Browser Computer Ý Server Internet

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DNS Internet Ý Server Browser Computer Ý Server Internet

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DNS Internet Ý Server Browser Computer Ý Server Internet GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US Connection: keep-alive DNT: 1

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DNS Internet Ý Server Browser Request & Request Headers

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DNS Internet Ý Server Browser Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US Connection: keep-alive Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US Connection: keep-alive Host: dnsimple.com Request & Request Headers

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DNS Internet Ý Server Browser GET / HTTP/1.1 Accept: text/html Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US Connection: keep-alive Host: dnsimple.com User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/36.0.1985.125 Safari/537.36 Request & Request Headers

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DNS Internet Ý Server Browser Response & Response Headers

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DNS Internet Ý Server Browser Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Content-Type: text/html; charset=utf-8 Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Connection: close Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Connection: close Status: 200 OK Response & Response Headers

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DNS Internet Ý Server Browser HTTP/1.1 200 OK Server: nginx Date: Thu, 07 Aug 2014 05:00:03 GMT Content-Type: text/html; charset=utf-8 Transfer-Encoding: chunked Connection: close Status: 200 OK Strict-Transport-Security: max-age=631138519 Response & Response Headers

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DNS Internet Ý Server Browser The Browser

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DNS Internet Ý Server Browser Rinse & Repeat

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DNS Internet Ý Server Browser Rinse & Repeat

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DNS Internet Ý Server Browser Rinse & Repeat Download the HTML document and begin parsing for information

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DNS Internet Ý Server Browser Rinse & Repeat Download the HTML document and begin parsing for information Create new connections (or use existing) to keep fetching stylesheets, javascript, images, video, music, etc.

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DNS Internet Ý Server Browser Computer Ý Server Internet

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DNS Internet Ý Server Browser Computer Ý Server Internet

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DNS Internet Ý Server Browser Computer Ý Server

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser

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DNS Internet Ý Server Browser

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Thank you for your time ♥

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Resources & Credits TCP/IP Illustrated Volume 1 http://amzn.to/X3vOag Color Palette http://goo.gl/iOuuP9 Like my driving? http://bit.do/packet-adventure-rate Icons FontAwesome