NETAJI SUBHAS OPEN UNIVERSITY

Presented by Sayanti Maitra

SATYAPRIYA ROY COLLEGE OF EDUCATION

World Wide Web and Its Social Implication

Enrolment Number : 132500020048Serial Number : 022637

ODL B.ED

Definition:

World Wide Web or web in short is an extensive and growing collection of hyperlinked documents which from part of the internet. It is a subset of the internet and it present text, images, animation, video, sound and other multimedia in a single interface.

Invention:In the 1990s the explosion of Internet application due to the

emergence of the World Wide Web (WWW). The web was invented at CERN by Tim Berners – Lee. This invention has added the commercial application to the Internet.

Architecture:

The WWW today is a distributed client-server service, in which a client using a browser can access a service using server. However, the service provided is distributed over many location called sites. Each site holds one or more web pages. Each web page can contain some links to other web pages in the same or other sites. Each web page is a file with a name and address.

WWW contains some parts they are:1. URL (Uniform Resource Locator)2. DNS (Domain Name System)3. Web browser4. Search engine

And some protocols like, HTTP, TCP etc.

URL: A web page, as a file, needs to have a unique identifier to distinguish it from other web pages. To define a web page, we need three identifiers: host, port and path.

DNS: Domain name system is a hierarchical naming system for computers in the internet. Most importantly it converts or translate human meaningful domain names in to the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world wide.

Web Browser: A browser is a computer program that accesses web pages and displays them on the computer screen. It is the basic software that is needed to find, retrieve, view and send information over internet. In fact, to access the World Wide Web, the user requires a web browser. Example of web browser is Microsoft Internet Explorer.

Search Engine: The internet provide access to a wealth of information on countless topics contributed by people throughout the world. However, the internet is not a library in which all its available items are identified and can require by single catalog. In fact, no one knows how many individual files (could be millions) resides on the internet. Hence, to conduct a search on the internet a special search tool known as search engine are used.

Implication of WWW (World Wide Web)

World Wide Web used in education:

World Wide Web used in banking system

World Wide Web used in medicine

World Wide Web used in transportation

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