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History of the creation of the Internet.

Internet

Internet is a network of networks of computers in different countries of the world. That is, the Internet is a network of computers located in different countries of the world. The number of networks connected to the Internet is currently in the tens of thousands and the number of computers in the billions. Its number is constantly increasing. In 1969, the United States Department of Defense first connected four universities in the country for research through a computer network known as ARPANET (Advanced Research Project Agency Network). In 1982, the Internet started with the use of TCP/IP (Transmission Control Protocol / Internet Protocol) protocol for connecting different networks.

The use of internet in commercial or professional work has made the speed of work much more dynamic especially in document exchange. Earlier there were complications in getting documents from one place to another, which is not there at all on the Internet. The following devices are required to use the Internet:

1. Computer, 2. Modem, 3. Communication medium (telephone line), 4. Internet connection, 5. Communication software.


Generally, users can access the Internet in two ways:


1| On-Line Internet

2। Off Line Internet

1. On-Line Internet: On-Line Internet is a method in which a server is kept permanently connected to the Internet. If a user wants to use the Internet, he can directly connect to the Internet through the server, so it will take less time. As this type of Internet connection is expensive, usually big companies called Internet Service Providers establish online connection.


2. Off Line Internet: Off Line Internet is a method of data exchange by an Internet Service Provider connecting their servers to other servers. In this method, users send all their data to the server, which is then sent and received by the ISP's server.


Nowadays, people located far away can exchange ideas with each other through video conferencing using the Internet. Many times a researcher uses various books to help in his research work. These books can be easily downloaded and read regardless of whether they are in the library of any part of the world. Users can download many necessary software from the Internet and use it on their own computer. A user can easily buy various products through the internet according to his needs. But this does not protect privacy for hackers while exchanging data. Various types of viruses can spread to the user's computer through the Internet.

 

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