INTERNET TECHNOLOGY DFINITION

INTERNET

Internet is an connection between several computers of different types belonging to various network across the world. It is a network of the networks. Million of people use internet to search and share information and ideas etc. The internet is an immensely complex combination of thousands of technologies and dozens of services used by the people around the world each day. Every network and every computer in the network exchange information according to certain rules called protocols. These different computers and networks are united with common threads of two protocols i.e., Internet Protocol (IP) and Transmission Control Protocols (TCP).

INTERNET CHARACTERISTICS

⇾ A Complex Network :- With the simplified network of networks that comprises over 150 millions computers.

⇾ Disorganize :- Internet can be cumbersome and confusing even for experienced users.

⇾ A Decentralized System :- Million of individuals networks and over 140 millions individuals computers connected throughout the world.

⇾ Composed of Billion of Files :- Files pertaining to thousands of subjects, disciplines, and professions are available in different file formats.

⇾ Widely Used :- More than 147 million people use the internet over 40 million of whom use it daily.

⇾Internet Scope :- It is across by people in approx 140 countries; people in over 155 countries use the internet for e-mail purpose.

⇾ Expanding Exponentially :- growing at the rate of 12% per month.

ELEMENTS OF THE INTERNET

• Client PC :- These are the computer that requests information from sources. If your personal computer has access to internet it is then categorized as a client computer.

• Server Computer :- A server is computer that holds the files for one or more websites. These are relatively powerful computers with a full time internet connection and can provide data to multiple clients computers simultaneously.

• Networks :- These are composed of one or more server computers and multiple client PC.

• Nodes :- Nodes is generic term used to describe a client, server or network.

INTERNET CONNECTIVITY

⇾ ISP (Internet Service Provider) :- ISP is an organisation that provides internet and access to the services provided on the internet. It is company such as AT & T (American Telephone & Telegraph), Verizon, Comcost

or Brighthouse, they provides internet access to companies, families and even mobile users. ISP use fibers optics, satellites, copper wire and other forms to provide internet access to it's customer.

ISP Types -------

• Access Providers :- They provide access to internet through telephone lines, cables, WiFi, or fiber optics.

•Hosting ISP :- Hosting ISP offers E-mail and other web hosting services such as virtual machines, clouds etc.

• Virtual ISP :- Such ISPs offers internet access via other ISP services.

• Free ISP :- They do not charge for internet services .

Internet Technology

History of Internet

The internet had its roots during the 1960's as a project of the united states government department of defense to create a non-centralized network. This project was called ARPANET ( Advance Research Agency of Networks ) to provide a secure and survivable communication network organisations engaged in defense related research. In to make networks more global a new sophisticated standard protocol was needed they develop IP (Internet Protocol) technology which defines how electronic messages were packaged addressed and sent over the network. The standard protocol was invented in 1977 and was called TCP/IP (Transmission Control Protocol/Internet Protocol). TCP/IP allow users to link the various branches of other complex networks directly ARPANET, which soon come to be called the internet.

Researchers and academics in their other fields being to make use of the network and eventually the NSF (National Science Foundation) which had created a similar and parallel network called NSFNET, to over much of the TCP/IP technology from ARPANET and establishes a network of networks capable of handling for greater traffic. In 1985 NSF being a program to establish internet access across the Unites States. They created a backbone called the NSFNET and opened their door to all education facilities, academic researches, government agencies and International Research Organisations. By 1990s the internet experienced an explosive growth. It is estimated that the number of computers connected to internet was doubling every year.