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Lecture

CS330 Lecture Notes - Internet2, Internet Protocol Suite, Videotelephony


Department
Computer Science
Course Code
CS330
Professor
Christine Dupont

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A network of networks
A collection of local, regional, national and
international computer networks linked together to
exchange data and information
Uses TCP/IP and client/server architecture
Most homes and companies connect to the
internet by subscribing to an Internet Service
Provider (ISP)
History of the Internet
1
Video Source: http://www.youtube.com/watch?v=eZSPWDMn730

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Internet Addressing and
Architecture
Every device connected to the Internet has a
unique IP address
Example: 129.97.128.40
Difficult to memorize
The domain name is the English-like name that
corresponds to the unique IP address
Example: www.uwaterloo.ca
You need to register (pay) to get a domain name
A Domain Name System (DNS) translates domain
names into IP addresses
Demo: http://www.domaintools.com/
2

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3
Image Source: http://www.windowsnetworking.com/img/gifs/tcpipdns.gif
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