Internet: The internet is a global network that connects billions of computers all over the world. It is a network of networks. The internet links different organizations, academic institutions, government offices, and home users to share information among large group of users.
Internet services: Today the internet become a part of not only the big organizations, universities, and offices, but has become the need of home users all over the world. The internet services are:
E-Mail: Electronic mail or e-mail is a means of transmission of messages electronically over communication networks. E-mail is one of the most widely used services on the internet. Anyone who has e-mail account can send an e-mail to any other person who also has an e-mail account. Gmail.com, yahoomal.com, rediffmail.com, hotmail.com, etc. are provides the e-mail facility to the users.
File transfer protocol: File transfer protocol is one of the oldest applications of the internet, which is basically used for transferring files from one computer to another computer, such as from a user’s personal computer to a web server. It is the preferred method of exchanging files because it is faster and reliable.
Chatting: Chatting is a very popular service of the internet that allows two or more online users come together to talk using an instant messenger. Chatting helps users to stay connected with concerned people in business or family who live many miles away.
Electronic news paper: An online news paper is a newspaper on the internet, which is either published separately or as an online version of a printed periodical.
World Wide Web: the technical definition of the World Wide Web or simply web can be given as “all resources and users on the internet that are using the hypertext transfer protocol” on the web, all the documents are formatted in a special markup language is called HTML.
Online shopping: Online shopping refers to buying goods or services from merchants who sell on the internet.
Search engine: The World Wide Web stores enormous amount of information on an amazing variety of topics in hundreds of millions of pages.
Internet addressing:
Each computer and router on the internet must have a name so that it can be uniquely identified. An Internet addressing or Internet protocol address or IP address consists of 32 bits, or four bytes. IP addresses as four natural numbers from 0-255. It is common to express IP addresses as four natural numbers separated by dots. The network interface card NIC of every computer that wants to send or receive messages on the internet must have at least one address. This is similar to the need for you to have a unique address receive mail. On the internet, this address is called IP address. IP address is often expressed in the dotted decimal format, such as: 192.168.1.1
Internet applications:
• Search engine: It can be used to search anything and everything. Most popular search engines are Google and yahoo.
• Shopping: Shopping has become easier with the advent of internet. You can buy or sell online.
• Communication: This is a major role of the internet. It helps people to communicate either with the use of social networking websites or through e mails. Even chatting is a major use of the internet.
• Job search: Nowadays, many people search for their jobs online as it is quicker and there is a larger variety of job vacancies present.
• Studying: Now right from kinder garden children are exposed to internet and computers. They find many useful things to learn on the internet.
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