Roll No 23_manu Nair_ Internet and Its Working

8/2/2019 Roll No 23_manu Nair_ Internet and Its Working

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INTERNET & ITS WORKING

MANU NAIR

ROLL NO: 23MBA(FT), SEM: 1

SMS, CUSAT


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CONTENTS

Introduction What is Internet Origin of Internet

Evolution of Internet Internet and its working Advantages Disadvantages Future Conclusion


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WHAT IS A NETWORK?

A large number of separate butinterconnected computers forms a

network.

Three Types:

LAN (Local Area Network) MAN(Metropolitan Area Network) WAN(Wide Area Network)


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WHAT IS INTERNET?

A collection of interconnectednetworks forms INTERNET.

The internet as we know today isactually a very large wide areanetwork (WAN) connecting computersand networks around the world. Internet makes it possible formillions of computer users to connectto one another via telephone line,

cables and satellites.


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ORIGIN OF INTERNET

Internet was born in late 1960s.

Advanced Research ProjectAgency (ARPA) or US Department of

Defence linked togethermainframe computers to form acommunication network known as

ARPANET


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AGENCYS MAIN OBJECTIVES

The design was built around reliabilityand redundancy so as to allowcommunication to continue betweenmajor nodes in case of attacks (nuclearattacks) or natural disaster.

To make local resource available to anycomputer (however remote) in net insuch a way that any program available to

local users can be used remotely without


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EVOLUTION OF INTERNET

1950:Development of Computers.

1960 & Early 1970:Packet switching networks (like

ARPANET) were developed using

variety of protocols. ARPANET led tothe development of protocols ofinternetworking.

Note: Internetworking is the process

of linking collection of network)


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EVOLUTION contd

1981:Access to ARPANET was expanded

when National Science Foundation (NSF)

created a new high speed network.

Objectives:To interconnect supercomputing centres

so they could access one anothersresources.

To give academic and research centres

access to one another for purpose of


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EVOLUTION contd

1982:The Internet Protocol Suite (TCP/IP) was

standardised and concept of world wide

network of fully interconnected TCP/IPnetwork called internet was introduced.

1990:ARPANET was decommissioned sincespeed was no longer sufficient . NSFNETfully replaced ARPANET.


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EVOLUTION contd

1995:NSFNET was decommissioned andInternet got commercialised.


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INTERNET


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SERVER

STORED


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Securitycatalyst.com

67.205.46.248

Google.com

72.14.205.100Facebook.com

69.63.176.140

Yahoo.com

216.27.69.178

IP ADDRESS


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INTERNET

SERVICE

PROVIDER

Gmail.c

om

aol.com(Server and

ISP)

Client

DSL


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INTERNET

SERVICE

PROVIDER

Gmail.c

om

aol.com(Server and

ISP)

Client

DSL

MAI


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ASWIN

ASWIN


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I S P

Facebook.com

69.63.178.11

Marketresearch.com

209.190.222.100

PAUL192.16.22.11

BOSS192.16.22.15


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I S P

Facebook.com

69.63.178.11

Marketresearch.com

209.190.222.100

PAUL192.16.22.11

BOSS192.16.22.15


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ADVANTAGE

S

Communication

Information

Entertainment

Services E-Commerce


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DISADVANTAGE

SHacking

Spamming

Spoofing

Phishing

Virus threat


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FUTURE OF INTERNET !!!

Globalism

Virtual reality

Bandwidth

Wireless

Grids

Integration


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CONCLUSION

Internet has become a very important part

of our life. It is impossible to think a worldwithout computers because our day to dayactivities are dependent on it. So it isnecessary to know how internet works.


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REFERENCES

Andrew S. Tanenbaum, Computer

Networks, 4th Edition, Pearson Education.

Video by Aaron Titus, Securitycatalyst.com.

Wikipedia

Documents

Roll No 23_manu Nair_ Internet and Its Working