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TOPIC 8: INTERNET AND WORLD WIDE WEB - Coggle Diagram
TOPIC 8:
INTERNET AND WORLD WIDE WEB
8.1 Evolution of Internet
Origins of the Internet
The Internet started as an experiment in the late 1960s by the Advances Projects Agency (ARPA, now called DARPA)
DARPA experimented with the connection of computer networks by giving grants to multiple universities and private companies to get them involved in the research.
6 Phases of Change of the Internet
1st Phase
Before 1969
Birth of ARPANET for the purposes of research and computer resources sharing in the US only.
Users; scientists, students and academicians.
2nd Phase
1970 - 1990
Communication like email, File Transfer Protocol and Usenet were used widely.
Internet usage concentrated in the US, Europe and Japan.
3rd Phase
1990 - 1997
Hypertext technique was used widely in network information.
Began to attract public attention because the Internet browser had attractive and user-friendly interfaces.
4th Phase
1997 - 2000
The Internet explosion. The number of users expanded rapidly. It was used for business transactions.
5th Phase
2001 - 2017
The Internet reality (advantages and disadvantages were felt).
6th Phase
2017 onwards
The Internet of Things refers to the ever-growing network of physical objects that feature an IP address for internet connectivity.
Internet of Things
IOT; cloud computing and service
are all aspects of a future internet.
Examples of successful combinations exist.
8.2 The Internet
Definition
The Internet is a grouping of computer networks that is very large and covers the whole world. It operates using Transmission Control Protocol/Internet Protocol (TCP/IP).
Internet vs Intranet
Internet
Public
Any user having dial up of Internet access line.
Access all kind of information.
Low security. Configured under 0 security level in firewall.
Intranet
Private.
Organization employees and Internal company departments.
Internal employee communication, telephone directories etc.
High security. Configured under 100 security level in firewall.
Internet vs Extranet
Extranet
Private.
Suppliers, customer and business partners.
Check status of orders, access data and send email.
Generally uses VPN technology for secured communication over Internet. Medium security level.