EECS 1520 Lecture Notes - Lecture 8: Wide Area Network, Packet Switching, Internet Backbone

• School: York University
• Department: Electrical Engineering and Computer Science
• Course: EECS 1520
• Professor: Avi Cohen

Document Summary

What is the internet: global network of networks, considered a wide area network (wan) of diverse devices, communication facilitated using agreed upon protocols, data travels using packet switching, computers id by ip address. Control over internet: no central body controls internet, organizations help standardize protocols and carry out admin tasks, no one owns the internet. Internet backbone: built upon long distance networks of telephone companies, primary connections between large networks on internet, networks connect through internet exchange points ixps. 1: mobile, provided by mobile phone provider, smartphone can serve as a wifi access point. Rules for internet services and application to exchange data. Segments/packets transported using one of two protocols. If a segment lost too late to be used. 4 bytes long x. x. x. x any number 0-255. 16 bytes long hhhh:hhhh: h is a hexadecimal digit. Multiple domains can be comdined to form fully qualified domain names. Keep track of registered domain names and their ip.