World Wide Web Computer Science YouTube Lecture Handouts

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World Wide Web

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Topics:

1. Introduction on WWW

2. History of WWW

3. Benefits

4. Working of WWW

5. Web browser

6. Web Server

7. Website and Home page

8. URL and Search Engine

9. Widely used search tools

10. Types of websites

11. Web 2.0

12. Components of WWW

13. Web Publishing

14. MCQs related to WWW and Websites

Introduction on WWW

  • It stands for World Wide Web.
  • It refers to the collection of information that is accessible on internet.
  • The information can be in form of text, voice, audio, video, images etc.
  • The page where entire data or information displayed is called as web page.
  • The collection of web pages is called as website.
  • The websites are displayed with the help of URL i.e.. name/domain like: www.abc.com
  • The URL (uniform resource locator) can be used on web browser.
  • The web is very useful service on internet.
  • The WWW is a system of interlinked, hypertext documents accessed via the internet.
  • With the help of web browser a user can view the web pages (website) .

History of WWW

  • It was created in 1989 by the Englishman named as Sir Tim Berners Lee and the Belgian Robert Caililau working at CERN (European Council for Nuclear Research) – Particle Physics Laboratory in Geneva, Switzerland.
  • On 30 April 1993, CERN put the WWW software in the public domain. Later, CERN made a release available with an open licence, a more sure way to maximize its dissemination.
  • Tim moved from CERN to the Massachusetts institute of Technology in 1994 to found the W.W.W Consortium (W3C) , an international community devoted to developing open web standards.
  • Established as a common language for sharing information on computers.

Benefits

The development of the WWW changed the world we live in. Since its introduction 25 years ago personal and professional lives have never been the same.

The Development of the WWW

Working of WWW

Working of WWW

Web Browser

A web browser displays a web document and enables users to access web documents. It is a software application used for retrieving, presenting and traversing information resources on the W.W.W.

Web Browser

Web Server

This is a program tat waits patiently for the browser to request a web page. The servers looks for the requested information, retrieves it and send it to the browser or sends an error message if the file is not found which is requested by the client or user.

Web Server
Web Server

Website and Home Page

Website and Home Page

URL & Search Engine

URL

URL stands for uniform resource locator. These are the web addresses. The resource locator is an addressing system.

Search Engine

To retrieve the relevant information in the form of text, images and videos, we need a special software called a search engine. When we do not need the exact URL of the website then we can type the required name of the website on search engine. It will search same type of websites containing same query string.

Widely Used Search Tools

Widely Used Search Tools

Types of Websites

Types of Websites

Web 2.0

It is the second generation of W.W.W. It refers to the features of the W.W.W.that enables people to collaborate and share the information online. There are various tools and platforms that are provided by this service.

Examples:

  • Social Networking Websites, YouTube etc.
  • Image sites like Picasa, flicker etc.
  • Blogging websites like blogger. com, wordpress. com etc.

Components of WWW

Components of WWW

Web Publishing

It is the development and maintenance of web pages.

1. Plan a website

2. Analyse and design a web site

3. Create a web site

4. Maintain a website

MCQs

Q 1. What is the acronym for Google?

Options:

1. Global Organization of Oriented Group Language of Earth

2. Global Org. of Oriented Group Language of Earth

3. Global Organization of Origin of Group Language of Evaluation

4. Global Organization of Open Group Language of Earth

Answer: 1

Q 2. Which of the following is NOT a Search Engine?

1. Google

2. Chacha. com

3. Ask. com

4. Bong. com

Options:

1. (1) and (2)

2. (2) and (4) only

3. (4) only

4. All of the above

Answer: 3

Charters:

0: 00 WWW

1: 13 Introduction on WWW

3: 33 History of WWW

4: 46 Benefits of WWW

5: 48 Working of WWW

6: 57 Web Browser

7: 30 Web Server

8: 15 Website and Home Page

8: 32 URL and Search Engine

9: 27 Widely Used Search Tools

9: 42 Types of Websites

10: 34 Web 2.0

11: 26 Components of WWW

12: 46 Web Publishing

13: 19 MCQs Related to WWW and Websites

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