The World Wide Web (WWW)

The World Wide Web (commonly known as WWW or the Web) is a global information space where documents and other web resources are identified by Uniform Resource Locators (URLs), interlinked by hypertext links, and accessible via the Internet.

1. Definition and Meanings of Acronyms

To understand the Web, you must know the core acronyms that drive its infrastructure:

• WWW: World Wide Web - A system of Internet servers that support specially formatted documents (usually in HTML).
• HTTP: Hypertext Transfer Protocol - The underlying protocol used by the World Wide Web to define how messages are formatted and transmitted.
• HTTPS: Hypertext Transfer Protocol Secure - A secure version of HTTP that uses encryption (SSL/TLS) to secure communication over a computer network.
• HTML: Hypertext Markup Language - The standard markup language used to create and structure pages on the Web.
• XML: Extensible Markup Language - A markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.

2. Brief History of the WWW

The World Wide Web was invented by British scientist Sir Tim Berners-Lee in 1989 while working at CERN (the European Organization for Nuclear Research) in Switzerland. It was originally conceived and developed to meet the demand for automated information-sharing among scientists in universities and institutes around the world.

3. Basic Web Terminologies

• Website: A collection of related web pages, images, videos, or other digital assets addressed relative to a common URL.
• Webpage: A single document on the World Wide Web, written in HTML, which can be viewed using a web browser.
• Homepage: The introductory or main page of a website, serving as a table of contents or starting point.
• Web Browser: A software application used to access, retrieve, and present information on the World Wide Web (e.g., Google Chrome, Mozilla Firefox, Safari).
• URL (Uniform Resource Locator): The unique global address of a resource on the Web.

4. Web Protocols

A protocol is a set of formal rules governing how data is transmitted and received over a network.

• HTTP (Hypertext Transfer Protocol): Standard protocol for transferring web documents. Port 80.
• HTTPS (Hypertext Transfer Protocol Secure): Secure version of HTTP. Port 443. It encrypts data sent between the browser and the server.
• FTP (File Transfer Protocol): Used for transferring files between a client and a server on a computer network.
• SMTP (Simple Mail Transfer Protocol): Used for sending emails across the Internet.

5. Advantages and Disadvantages of the WWW

Advantages:

• Global Accessibility: Access to information from anywhere with an active internet connection.
• E-Commerce: Ability to purchase products and services from the comfort of your home.
• Communication: Connect and communicate globally through text, chats, and emails.
• E-Learning: Ability to take online classes and acquire certifications remotely.
• Marketing & Branding: Businesses can reach a worldwide audience without needing physical offices everywhere.

Disadvantages:

• Identity & Data Theft: Risk of personal credentials and financial data being stolen by hackers.
• Cyberbullying: Use of electronic communication to bully or harass individuals.
• Fake News: Rapid dissemination of unverified or false information.
• Spam: Unsolicited bulk messages sent via email or comments.
• Online Predators / Paedophiles: Exploit communication platforms to target vulnerable individuals.

6. Navigation through Websites

To move or navigate through web pages, users utilize hyperlinks, search bars, and the address bar of a Web Browser. Example websites of academic interest include:

• www.jamb.gov.ng (Joint Admissions and Matriculation Board)
• www.waecdirect.org (West African Examinations Council)
• www.neco.gov.ng (National Examinations Council)
• www.ui.edu.ng (University of Ibadan)
• www.google.com (Search Engine)

7. Web Development Software

Web development requires specialized software to design, code, and manage digital content:

• WordPress: A popular Content Management System (CMS) used to build websites easily.
• Adobe Dreamweaver: A professional IDE/web design tool for writing HTML, CSS, and Javascript.
• Microsoft FrontPage: A legacy WYSIWYG (What You See Is What You Get) HTML editor.
• Adobe Photoshop: Used extensively to design visual components and graphics for websites.
• Google Web Designer: A tool to design interactive HTML5 ads and websites.

8. Key Differences: Email vs. Website