Internet

I N T E R N E TI N T E R N E T

Session ObjectiveSession Objective
 What is INTERNET ?What is INTERNET ?
 Brief History of Internet.Brief History of Internet.
 Services provided by Internet.Services provided by Internet.
 Impact of Internet.Impact of Internet.
• Education.Education.
• Health Care.Health Care.
• Business.Business.

What is I N T E R N E T ?What is I N T E R N E T ?
 The largest network of networks inThe largest network of networks in
the world.the world.

 A network of networks, joining manyA network of networks, joining many
government, university and privategovernment, university and private
computers together and providing ancomputers together and providing an
infrastructure for the use of E-mail,infrastructure for the use of E-mail,
bulletin boards, file archives,bulletin boards, file archives,
hypertext documents, databases andhypertext documents, databases and
other computational resources.other computational resources.
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 The vast collection of computerThe vast collection of computer
networks which form and act as anetworks which form and act as a
single huge network for transport ofsingle huge network for transport of
data and messages across distancesdata and messages across distances
which can be anywhere from thewhich can be anywhere from the
same office to anywhere in thesame office to anywhere in the
world.world.
Continue……

Brief History of InternetBrief History of Internet
 ARPA – Advanced Research ProjectARPA – Advanced Research Project
Agency.Agency.
 1969 January 2 – started an1969 January 2 – started an
experimental Computer Network.experimental Computer Network.
 Concept – No Server, but equalConcept – No Server, but equal
importance/participation to everyimportance/participation to every
computer in the Network.computer in the Network.
 Even if, one or two node destroyedEven if, one or two node destroyed
that will not affect the Network.that will not affect the Network.

Paul BaranPaul Baran
 Paul Baran developed thePaul Baran developed the
field offield of packet switchingpacket switching
networks while conductingnetworks while conducting
research at the historicresearch at the historic
RAND organization.RAND organization.

Vinton CerfVinton Cerf
 Father of InternetFather of Internet
 Co-designer of theCo-designer of the TCP/IPTCP/IP
networking protocol.networking protocol.

Brief History of InternetBrief History of Internet
 First named as ARPANETFirst named as ARPANET
 This is renamed as INTERNETThis is renamed as INTERNET
• TCP/IP (Transmission ControlTCP/IP (Transmission Control
Protocol/Internet Protocol)Protocol/Internet Protocol)
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Internet Growth TrendsInternet Growth Trends
 1977: 111 hosts on Internet1977: 111 hosts on Internet
 1981: 213 hosts1981: 213 hosts
 1983: 562 hosts1983: 562 hosts
 1984: 1,000 hosts1984: 1,000 hosts
 1986: 5,000 hosts1986: 5,000 hosts
 1987: 10,000 hosts1987: 10,000 hosts
 1989: 100,000 hosts1989: 100,000 hosts
 1992: 1,000,000 hosts1992: 1,000,000 hosts
 2001: 150 – 175 million hosts2001: 150 – 175 million hosts
 2002: over 200 million hosts2002: over 200 million hosts
 By 2010, about 80% of the planet will be on theBy 2010, about 80% of the planet will be on the
InternetInternet

How to Connect to InternetHow to Connect to Internet

Internet ServicesInternet Services
 Electronic Mail (e-mail)Electronic Mail (e-mail)
 World Wide WebWorld Wide Web
 TelnetTelnet
 File Transfer Protocol (FTP)File Transfer Protocol (FTP)
 Internet TelephoneInternet Telephone
 Web TV/RadioWeb TV/Radio
 Internet Relay ChatInternet Relay Chat
 News GroupsNews Groups

Electronic Mail (e-Mail)Electronic Mail (e-Mail)
 Distributes e-mail messages andDistributes e-mail messages and
attached files to one or moreattached files to one or more
electronic mailboxes.electronic mailboxes.
 Eg:- e-mail addressesEg:- e-mail addresses
• thomas@mes.edu.inthomas@mes.edu.in
• murugan@mesmarampally.orgmurugan@mesmarampally.org

thomas @ mes . edu . inthomas @ mes . edu . in
murugan @ mesmarampally . orgmurugan @ mesmarampally . org
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Organization Type of OrganizationName of PersonName of Person Country

 Different e-mail service providersDifferent e-mail service providers
• G-MailG-Mail
• Yahoo MailYahoo Mail
• Hot MailHot Mail
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World Wide Web (W W W)World Wide Web (W W W)
 Most important service provided byMost important service provided by
Internet.Internet.
 An internet-based hypermedia initiative forAn internet-based hypermedia initiative for
global information sharing.global information sharing.
 Developed in 1989 by Tim Berners-Lee ofDeveloped in 1989 by Tim Berners-Lee of
the European Particle Physics Lab (CERN)the European Particle Physics Lab (CERN)
in Switzerland.in Switzerland.

Tim Berners-LeeTim Berners-Lee
 Father of W W W.Father of W W W.
 The inventor ofThe inventor of
HTML.HTML.
 Invented W W WInvented W W W
while working atwhile working at
CERN, the EuropeanCERN, the European
Particle PhysicsParticle Physics
Laboratory.Laboratory.

Search EnginesSearch Engines
 For searching information on theFor searching information on the
Internet.Internet.
• GoogleGoogle
• YahooYahoo
• AltavistaAltavista

WWIKIPEDIIKIPEDIAA
 A wiki is a publishing platform on whichA wiki is a publishing platform on which
many people can contribute new contentmany people can contribute new content
and revise existing content.and revise existing content.
 The content benefits from the collectiveThe content benefits from the collective
knowledge of the contributors, so wikisknowledge of the contributors, so wikis
can be very beneficial for group projects.can be very beneficial for group projects.
 Some businesses and organizations useSome businesses and organizations use
wikis to maintain documents.wikis to maintain documents.

Impact of InternetImpact of Internet
 EducationEducation
 Health CareHealth Care
 BusinessBusiness

Internet

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