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Internet Services/ Application

The important and popular services of internet are shown in figure below:



1) Communication Services: Internet communication tools facilitate written communication. These tools include: 
i) E-Mail: E-mail, which refers to sending messages electronically, was one of the first Internet tools. With the help of E-mail one can send and receive any information and message.
 
ii) Usenet: Usenet is a network that provides users with discussion groups. A user ports an article to a chosen newsgroup on the Usenet where each newsgroup is devoted to a particular topic such as politics, environment, surfing and so on.
 
iii) E-Chatting: Chatting on the Internet has become a popular way for people to connect online in a group to share similar interests. "Chatting" is like talking, except that one type words rather than speak. Typically, more than one "conversation" goes on simultaneously at a given time on chat room.
 
iv) Telnet: Telnet is a command that connects the user to a remote machine which may be located anywhere on the Internet and the user can then type and execute commands on the remote machine. For example, to change directories in search of certain files, the services that telnet provides depends on the services provided by the host machine, which may include much more than simple file transfers.

v) Internet Telephony: Internet telephony is the use of the Internet rather than the traditional telephone company infrastructure, to exchange spoken or other telephonic information. It consists of hardware and software that enable people to use the Internet as a transmission medium for telephone calls. There are many Internet telephony applications available.
 
vi) Video Conferencing: Video conferencing is an emerging service on the Internet that allows a group of users located around the globe to talk and interact with each other as they were sitting and discussing in a single room. The parties interacting can see each other talking on their computer screens and can hear each other's voice through a special audio-device fixed in their computers.
 
2) Information Retrieval Services: This category of information retrieval tools include: 
i) File Transfer Protocol (FTP): It is one of the first tools on the Internet which allows users to move files, such as text, graphics, sound and so on, from one computer to another. It is a command that activates a type of client-server relationship. Hence, anything that can be stored on a computer can be moved with FTP service.

ii) Archie: Archie tool, one of the first information search tools developed on the Internet, periodically searches anonymous FTP servers that participate in the Archie database and identifies all files on these servers. It then creates a central database that users can access to locate information. Users who have the Archie software, or who can use the Telnet command to connect to an Archie server, can access this database.

iii) Gopher: The other type of information retrieval tool available on the Internet is Gopher, a menu based interface that provides easy access to information residing on special servers, called Gopher sites. Although Gopher performs_primarily the same tasks as the FTP command, its interface is much more user friendly and it provides additional functions, such as links to other Internet services. By selecting an item on the Gopher menu users can move, retrieve, or display files from remote sites.
 
iv) Veronica: It is a tool for searching the items on gopher menus throughout the Internet. With the help of Veronica, user can get necessary information very rapidly. Any user can easily access any database with the help of Veronica server.
 
3) Web Services: The next step in software evolution will have software applications provided in the form of services delivered over the internet. It is the ability to deliver applications to users at much lower costs. Web services includes:
i) E-Govt: E-government (e-govt) describes the use of technologies to facilitate the operation of government and the dispersement of government information and services. E-government deals heavily with Internet and non-internet applications to aid in governments. E-government is digital interactions between a government and citizens (G2C), government and businesses (G2B), government and employees (G2E), and also between government and governments /agencies (G2G).
 
ii) E-Commerce: Internet has also facilitated the introduction of a new market concept that consists of virtual shops. These shops remain open 24 hours all the year round and are accessible to purchasers all around the world. E-commerce is the buying and selling of product or service over electronic systems such as Internet and other computer networks.
 
iii) E-News: Internet now has literally thousands of electronic form of news that can be found both for free and low cost.
 
iv) E-Recruitment: E-recruitment, also known as online recruitment, is the practice of using technology and in particular Web-based resources for tasks involved with finding, attracting, assessing, interviewing and hiring new personnel.

The purpose of e-recruitment is to make the processes involved more efficient and effective, as well as less expensive. Online recruitment can reach a larger pool of potential employees and facilitate the selection process.
 
v) E-Education: The term "e-education" refers to the application of Internet to the delivery of learning experiences. E-education takes place in formal electronic classrooms, on corporate intranets used for just-in-time training, audio and video teleconferencing and in a variety of other technology mediated learning spaces.

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