Introduction To Internet And Protocols !!
Internet:
Internet means connecting computers to any other computer anywhere in the world. Internet is the highway of information.
The Internet has one very simple job: to move computerized information (known as data) from one place to another. The Internet is generally define as a global network connecting millions of computers.
The internet is a passive network of networks, a networking infrastructure.with the help of internet one can easily be in touch with anyone in the whole world by sending electronic mail,by chatting. Travel bookings can be made very easily, one can order or buy anything online. In simple terms it can be said that internet provides a very strong connection aur network between computers global, bringing people and their working close to each other.
History of Internet:
The first work cable prototype of the internet game in the late 1960's with the creation of ARPANET, or the advance Research Project Agency Network. Original offended by the us Department of Defence, ARPANET use packet switching to all the multiple computers to communicate on a single network. The technology continue to grow in the 1970's after scientist robot khan and vinton cref develop Transmission control protocol and Internet Protocol, or TCP/IP, communications model that said standards for how data could be transmitted between multiple networks.ARPANET adopted TCP/IP on January 1,1083, and form there researchers began tu assemble the "network of networks" that became the modern Internet. The online world then took on a more recognisable form in 1990, when computer scientist Tim Berners-Lee invented the world wide web (WWW).
Protocols:
A protocol is a set of rules that governs the communication between the computers on a network.. in order to have to computers to talk to each other, they must be speaking the same language.
Examples of Protocols are -
- TCP/IP : Transmission Control Protocol and Internet Protocol - It breaks down the message into package and sent them out into the network.
- DNS: Domain Name System - It translate network address (such as IP addresses) into terms understood by humans ( such naas domain name) and vice-versa.
- DHCP: dynamic host configuration protocol- It can automatically asign internet addresses to computer and users.
- FTP: File Transfer Protocol- A protocol that is used to transfer and manipulate files on the Internet.
- HTTP: Hyper-text Transfer Protocol- And internet based protocol for sending and receiving web pages.
- IMAP: Internet Message Access Protocol - A Protocol for receiving email messages from server on the internet. It maintain a copy of all the emails on server. We can sort, filter emails.
- IRC: Internet Relay Chat- A protocol use for internet chat and other communications. It facilitates communication in the form of text.
- POP3: post office Protocol versions 3 - A protocol used for receiving emails from remote mail services. It does not maimtain copy on the server.
- SMTP: Simple Mail Transfer Protocol - A protocol for sending email messages to the server on the internet.
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