NCERT Computer: Chapter 5 – Data Communication and Networking Part 7

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2. Important terms used in Networking

(a) Internet

The newest type of network to be used within an organisation is an internet or internet web.

The hardware and software needs are the same as for the internet, specifically TCP/IP, server and browser software used for the World Wide Web. Because most organisations have a need for more dynamic ways to link people and information, the internet market is expanding day by day.

The help of Internet, all computers of an organisation can work as stand-alone systems, connected to a mainframe, or part of a LAN or WAN.

(b) E-Mail

E-mail stands for electronic mail.

This is one of the most widely used features of Internet. Mails are regularly used today where without the help of postage stamp we can transfer mails anywhere in the world.

Therefore the mailing system through e-mail is excessively fast and is being used widely for mail transfer.

(c) Voice Messaging

It is a new communication approach which is similar to electronic mail except that it is audio message rather than text messages that are processed.

That sender's voice signal is then digitised and stored. The system can then either deliver the message at a specified time in future or it can be retrieved from a database by the recipient.

The message is reconverted back into its analog format when it is delivered or retrieved so that the recipient hears it as the original sender's voice on a telephone.

The main advantage of voice mail over electronic mail is that the sender does not have to type.

Voice mail also makes it easy to include people in the firm's environment in an communication network.

(d) E-Commerce

Electronic commerce or e-commerce as it is popularly known refers to the paperless exchange of business information using Electronic Data Interchange, Electronic mail, Electronic Bulletin Boards, Electronic Fund Transfer and other network based technologies.

Internet has also helped EC to boost up because it is a low cost alternative to the proprietary networks.

EC standards are however under development. Electronic Data Interchange (EDI) is still the dominant part of EC.

Information Technology has transformed the way people work.

EC is associated with buying and selling of products and services over computer communication networks.

(e) Electronic Data Interchange (EDI)

EDI is the computer-to-computer exchange of business documents in a standard format. These formats look much like standard forms and are highly structured.

(f) Teleconferencing

It refers to electronic meetings that involve people who are at physically different sites.

Telecommunication technology allows participants to interact with one another without travelling to the same location.