1. INTERNET
Rahul kundu
6th sem, IT

2. CONTENT
 Definition of internet
 Evolution of internet
 Internet application

3. DEFINITION OF INTERNET
 The internet is a global system of
interconnected computer networks.
 The internet in simple terms is a network of the
interlinked computer networking worldwide,
which is accessible to the general public.
 These interconnected computers work by
transmitting data through a special type of
packet switching which is known as the “IP or
the internet protocol”.

4. DEFINITION OF INTERNET
 It is a network of networks that consists of
millions of private, public, academic, business &
government networks of local to global scope
that are linked by a broad array of electronic
wireless & optical networking technologies.
 The internet is also often referred to as “the
Net”.

5. DEFINITION OF INTERNET CONT…
 Internet helps in 3 ways:-
 To get information
 Providing information
 Compiling information

6. DEFINITION OF INTERNET CONT…
Internet

7. EVOLUTION OF INTERNET
 1958-1964
 1958- after USSR launches sputnik, first artificial
earth satellite, US forms the advanced research
projects agency(ARPA), the following year, within
the department of defense(DoD) to establish US
lead in science & technology applicable to the
military.
 1961- first published work on packet switching.

8. EVOLUTION OF INTERNET CONT…
 1958-1964
 1964- other independent work in packet
switching at RAND institute & national physics
laboratory in England.

9. EVOLUTION OF INTERNET CONT…
 1966-68
 1966- Lawrence Roberts publishes overall plan
for an ARAPnet, a proposed packet switch
network.
 1968- ARPA awards contracts for 4 nodes in
ARPANET to UCLA(university of California at los
Angeles)[network measurement], stand ford
research institute [network information center],
UCSB(interactive mathematics] and U
Utah(graphics);
BBN(bolt, beranek, Newman) gets
contract to build the IMP(internet message
processors switches).

10. EVOLUTION OF INTERNET CONT…
 1969
 7/4/1969- first RFC(“host switch” by Steve
Crocker) basis for the network control
protocol(NCP).
 2/9/1969- Leonard kleinrock’s computer at UCLA
becomes first node on the ARPANet.
 29/10/1969- first packets sent;
Charlie Kline attempts use of remote login from UCLA to SRIG
System crashes as “g” in entered.

11. EVOLUTION OF INTERNET CONT…
 1967-71
 1967-1972:- vint Cerf, graduate student in
kleinrock’s lab, works an application level
protocols for the ARPANet.
 1971:- ray Tomlinson of BBN writes email
application.
derived from 2 existing:- an intra-
machine email program(SENDMSG) & an
experimental file transfer program(CPYNET)

12. EVOLUTION OF INTERNET CONT…
 1971-73
 1971:- first cross-country link installed by AT&T
between UCLA & BBN at 56 kbps.
 Other networks:- ALOHA net, Telnet, Transpace.
 1973:- Ethernet was designed in 1973 by Bob
Metcalfe at Xerox Palo Alto research
center(PARC).

13. EVOLUTION OF INTERNET CONT…
 1972-74
 1972-74:- Robert Khan & Vint Cerf develop
protocols to connects network without any
knowledge of the topology or specific
characteristics of the underlying nets.
 1972:- Robert Khan gives first public
demonstration of ARPAnet(now 15 nodes) at
international conference on computer
communication.

14. EVOLUTION OF INTERNET CONT…
 1974-78
 1974:- first full draft of TCP produced.
 Nov 1977:- first 3-network TCP/IP based
interconnection demonstrated linking SATNET,
PRNET, ARPANET in a path leading from Melo
park, CA to university college London & back to
USC/ISI.
 1978:- TCP split into TCP and IP.

15. EVOLUTION OF INTERNET CONT…
 1981-84
 1981:- term “internet” coined to mean collection of
interconnected networks.
 1982:- ISO release OSI 7 layer model.
 1/1/1983:- original ARPANET NCP was banned
from the ARPANET & TCP/IP was required.
 1984:- Cisco system founded.

16. EVOLUTION OF INTERNET CONT…
 1983-86
 1984:- domain name system introduced; 1000+
hosts.
 1986:- NSFNET created to provide access to 5
super computer including theory center at Cornell.
 1983:- ARPANET split into ARPANET & MILNET;
MILNET to carry defense related traffic.

17. EVOLUTION OF INTERNET CONT…
 1988-89
 1988:- nodes on internet began to double every
year.
 Nov 1998:- internet worm affecting about 10% the
60000 computers on the internet.
 1998:- internet assigned number authority (IANA)
established in December with Jon Postel as its
director. Postel was also the RFC editor & US
domain registrar for many years.

18. EVOLUTION OF INTERNET CONT…
 1990-93
 1990:- ARPANET ceases to exist.
 1990:- Tim Berners-Lee develops hypertext
system with initial version of HTML & HTTP & first
GUI web browser called “world wide web
(WWW)”.

19. EVOLUTION OF INTERNET CONT…
 1990-93
 1990:- first ISP world std.com
 1991:- NSFNET lifted restrictions on use of
NSFNET for commercial purposes; Linux was
released by Linux Torvalds.
 1992:- internet society founded.
 1993:- INTERNIC created by NSF to provide
internet services

20. EVOLUTION OF INTERNET CONT…
*** INTERNET HISTORY ***

21. EVOLUTION OF INTERNET CONT…
A BRIEF SUMMARY OF THE
EVOLUTION OF THE INTERNET
Memex
Conceived
1945
A
Mathematical
Theory of
Communication
1948
Silicon
Chip
1958
First Vast
Computer
Network
Envisioned
1962
Packet
Switching
Invented
1964
Hypertext
Invented
1965
ARPANET
1969
TCP/IP
Created
1972
Internet
Named
and
Goes
TCP/IP
1984
WWW
Created
1989
Mosaic
Created
1993
Age of
eCommerce
Begins
1995

22. EVOLUTION OF INTERNET CONT…
 1977: 111 hosts on Internet
 1981: 213 hosts
 1983: 562 hosts
 1984: 1,000 hosts
 1986: 5,000 hosts
 1987: 10,000 hosts
 1989: 100,000 hosts
 1992: 1,000,000 hosts
 2001: 150 – 175 million hosts
 2002: over 200 million hosts
 By 2010, about 80% of the planet will be on the Internet
INTERNET GROWTH TRENDS

23. INTERNET APPLICATIONS
 Remote login(Telnet)
 File transfer(FTP)
 Electronic mail(E-mail)
 News
 Hypertext(WWW)

24. INTERNET APPLICATIONS
 Terminal services
 To receive and send emails
 Read & post article in newsgroup
 Download files to your PC
 Chat with online users

25. INTERNET APPLICATIONS
 Access online multimedia
 Search the net for information
 Online shopping.

26. THANK
YOU
Rahul kundu
6th sem, IT