11/27/06 1 Hofstra University - CSC005 Chapter 15 Networks ARPANet in 1969.
Using the Internet. A Brief History 1969 – ARPANET created by US Govt. to link defense...
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Transcript of Using the Internet. A Brief History 1969 – ARPANET created by US Govt. to link defense...
![Page 1: Using the Internet. A Brief History 1969 – ARPANET created by US Govt. to link defense installations with major universities 1972 – First email 1982 –](https://reader036.fdocuments.us/reader036/viewer/2022082713/5697bf9e1a28abf838c942d1/html5/thumbnails/1.jpg)
Using the InternetUsing the Internet
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A Brief History• 1969 – ARPANET created by US Govt. to link
defense installations with major universities• 1972 – First email
• 1982 – TCP/IP is developed.
• 1983 – MILNET separates from ARPANET
• Mid 1980s – NSFNET replaces ARPANET
• 1989 – WWW developed by Tim Berners-Lee
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Timeline Continued•1993 – First Web browser, Mosaic
•2006 – Over 92 million Websites are online
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URL (Uniform Resource URL (Uniform Resource Locator)Locator)
The address of a Web site.The address of a Web site.
Ex: http://www.youtube.comEx: http://www.youtube.comhttp://www.pmsd.org/pmehs/http://www.pmsd.org/pmehs/http://www.free.com/kerby/page4.htmlhttp://www.free.com/kerby/page4.html
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Parts of a URLParts of a URL
http://www.acme.com/support/techtips/2004.htmlhttp://www.acme.com/support/techtips/2004.html
Protocol
Domain Name
Path File Name
Protocol: method of data transfer; defined by rules
httphttp Hypertext Transfer ProtocolHypertext Transfer Protocol
ftpftp File Transfer ProtocolFile Transfer Protocol
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Parts of a URLParts of a URL
http://www.acme.com/support/techtips/2004.htmlhttp://www.acme.com/support/techtips/2004.html
Domain name: identifies the Web server
Ex: www.youtube.comwww.pmsd.org
www.free.com
Protocol
Domain Name
Path File Name
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Parts of a URLParts of a URL
http://www.acme.com/support/techtips/2004.htmlhttp://www.acme.com/support/techtips/2004.html
Path: folder document is stored in
Works like the paths (or folders) on your H drive
Protocol
Domain Name
Path File Name
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Parts of a URLParts of a URL
http://www.acme.com/support/techtips/2004.htmlhttp://www.acme.com/support/techtips/2004.html
File name: name of a Website file.
Can be any file type including images, sound files, and documents like Word (.doc) and Adobe Reader files (.pdf)
Protocol
Domain Name
Path File Name
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Domain Suffixes:Domain Suffixes: .com – commercial (for profit) based for .com – commercial (for profit) based for
business.business. .gov - government agency.gov - government agency .mil - military agency.mil - military agency .org - business or independent organization, .org - business or independent organization,
usually NOT for profitusually NOT for profit .int - large international organization like .int - large international organization like
NATONATO .net - large organization/network.net - large organization/network .edu - university or other educational .edu - university or other educational
facilityfacility
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Adding other initials after the domain Adding other initials after the domain
identifies the country or country code.identifies the country or country code.
• .uk - United Kingdom.uk - United Kingdom• .nz - New Zealand.nz - New Zealand• .au - Australia.au - Australia• .fr - France.fr - France• .jp - Japan.jp - Japan• .is - Iceland.is - Iceland• .us - United States.us - United States
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DNS (Domain Name Server)DNS (Domain Name Server)
Converts Domain Names to IP AddressesConverts Domain Names to IP Addresses• Easier to remember the nameEasier to remember the name
IP Address format: 999.999.999.999IP Address format: 999.999.999.999
Ex: 42.17.127.9Ex: 42.17.127.9 255.0.0.1255.0.0.1
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Questions?Questions?