computer networks and internet
TRANSCRIPT
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COMPUTER NETWORKS & INTERNET
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The Term ‘Computer Network’ refers tothe process of interconnecting two or more computers
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The process of interconnecting twoor more than two computers is referred as NETWORKING.
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Applications of Computer Network
• Share Resources (Hardware / Software)
• Communication• Sharing files• Share Information
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INTERNET
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The Internet is a global web of networks and servers.
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It connectspeople to people,businesses to people & businesses to businesses.
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A network of networks. It is relatively easy to link to it It is a classic example of
decentralization and independence since no one really owns or controls it
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ORIGIN OF INTERNET
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5 MB hard drive in 1960’s
1 TB hard drive now
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ORIGIN OF INTERNET
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HISTORY TIMELINE OF INTERNET
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1969
• ARPANET
1971
• First E-mail
1980
• NSFnet
1983
• TCP/ IP
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1988 •First IRC (Internet Relay Chat)
1989 •www goes public
1996 •Major Search Engine Google
1999 •70million Computers connected with Internet
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2001• Wikipedia the 1st free
Encyclopedia
2004• Facebook the social
media site
2005• YouTube was
introduced
2015• 3.2billion Internet
users
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How Internet works?
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Internet Service Provider
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TRANSMISSION MEDIA
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TRANSMISSION MEDIAGuided Media
Twisted Pair Cable
Coaxial Cable
Fiber – Optics Cable
Unguided MediaMicrowave
Radiowave
Infrared Rays
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Twisted Pair Cable
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Coaxial Cable
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Fiber – Optics Cable
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Microwaves
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Radio waves
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Infrared Rays
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NETWORK TOPOLOGIES
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TOPOLOGYHYBRID TOPOLOGY
BUS TOPOLOGY
STAR TOPOLOGY
RING TOPOLOGY
MESH TOPOLOGY
TREE TOPOLOGY
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Bus Topology
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Ring Topology
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Star Topology
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Tree Topology
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Mesh Topology
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Hybrid Topology
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NETWORK CLASSIFICATION
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LANLocal Area Network
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MANMetropolitan Area Network
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WANWide Area Network
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APPLICATIONS OF INTERNET IN
BUSINESS
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Applications of INTERN
ET in Busines
s
Gather Information
Collaborate with Others
Research Competitors
Sell Products & Services
Communicate Internally
Publish Information
Customer Support &
Service
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