01. Computer Networks ?

Evolution of Computer Networks : 


ITU-T : The International Telegraph and Telephone Consultative Committee of Telecommunication Union: 
defines: Telecommunication : "transmission and reception of signal representing signs, text, images, sounds, information of any nature via cables, radio, optional or electromagnetic media. "

First they tried transferring voice : Telephony Network 
1837 : Morse code
1876 : Bell phone patent
1891 : Strowger Selector Patent
1894 : First Electromechanical Telephone Exchange
1895 : Marconi Radio Experiment
1923 : First Automatic Long-Distance Service
1938 : Rele
1960 : Telephone Exchange Electronically Controlled
1975 : First Exchange Fully Electronic
1980 : Common Channel signalling, ISDN, Analog Mobile Networks
1990 : Intelligent Network , Digital Mobile Networks

With the passage of time they start transferring data : Data Networks 
Data consist of : image, music, video, text and all sorts of internet objects. 
1969 : ARPANET (first RFC : Host software)
1971 : ARPANET (15 nodes and 23 host . E-mail)
1973 : First FTP version
1973 : First TCP version
1976 : Ethernet and X.25
1980 : OSI
1982 : Token ring (IBM)
1982 : TCP and IP are defined as the reference protocols.
1984 : DNS
1985 : FDDI
1990 : Tim Berners-Lee (CERN) presents "World Wide Web" document
1993 : Web is 1% of total internet traffic
1997 : Internet2, experimental research
1999 : P2P : Napster, Gnutella, Kazaa
Now : Social networks, Streaming, On-line gaming, P2P TV and many more allyou guys are using right now...