<<–2/”>a href=”https://exam.pscnotes.com/5653-2/”>h2>WWW: The World Wide Web
What is the World Wide Web?
The World Wide Web (WWW), commonly known as the web, is a system of interconnected hypertext documents accessed via the Internet. It is a vast collection of information, Resources, and Services available to anyone with an internet connection. The web is not the same as the internet; it is a service that runs on top of the internet.
History of the world Wide Web
- 1969: The internet, initially known as ARPANET, was created by the US Department of Defense.
- 1989: Tim Berners-Lee, a British scientist working at CERN, proposed the concept of the World Wide Web.
- 1991: The first website, info.cern.ch, was launched.
- 1993: The first web browser, Mosaic, was released, making the web accessible to the general public.
- 1994: The first commercial web browser, Netscape Navigator, was released.
- 1995: The first search engine, Yahoo!, was launched.
- 1998: Google was founded.
- 2004: Facebook was launched.
- 2007: The first iPhone was released, marking the beginning of the mobile web era.
Key Components of the World Wide Web
- Hypertext: A system of linked documents, allowing users to navigate between them by clicking on links.
- Hyperlinks: Links that connect different web pages, enabling users to jump between them.
- Web Servers: Computers that store web pages and other files and make them available to users.
- Web Browsers: Software applications that allow users to access and view web pages.
- Uniform Resource Locator (URL): A unique address that identifies a specific resource on the web.
- Domain Name System (DNS): A hierarchical system that translates domain names into IP addresses.
- Internet Protocol (IP): A set of rules that govern how data is transmitted over the internet.
How the World Wide Web Works
- Request: When a user enters a URL in their web browser, the browser sends a request to the web server hosting the website.
- DNS Lookup: The browser uses the DNS to translate the domain name into an IP address.
- Connection: The browser establishes a connection with the web server using the IP address.
- Response: The web server sends the requested web page to the browser.
- Display: The browser interprets the HTML code of the web page and displays it on the user’s screen.
Types of Web Pages
- Static Web Pages: Pages that are stored as fixed files on a web server and do not change dynamically.
- Dynamic Web Pages: Pages that are generated on the fly by a web server based on user input or other factors.
- Interactive Web Pages: Pages that allow users to interact with the content, such as filling out forms or playing games.
Web Technologies
- HTML (HyperText Markup Language): The language used to create the structure and content of web pages.
- CSS (Cascading Style Sheets): A language used to style the appearance of web pages, including fonts, colors, and layout.
- JavaScript: A scripting language used to add interactivity and dynamic behavior to web pages.
- PHP (Hypertext Preprocessor): A server-side scripting language used to create dynamic web pages.
- Python: A general-purpose programming language often used for web development.
Impact of the World Wide Web
- Information Access: The web has made information readily available to anyone with an internet connection.
- Communication: The web has revolutionized communication, enabling people to connect with each other across the globe.
- E-Commerce: The web has enabled businesses to sell goods and services online, creating a global marketplace.
- Social Media: The web has fostered the rise of social media platforms, connecting people and facilitating online communities.
- Education: The web has become a valuable resource for education, providing access to online courses, research materials, and educational resources.
Future of the World Wide Web
- Artificial Intelligence (AI): AI is expected to play a significant role in the future of the web, enabling personalized experiences, intelligent search, and automated content creation.
- Virtual Reality (VR) and Augmented Reality (AR): VR and AR technologies are expected to enhance web experiences, creating immersive and interactive environments.
- Internet of Things (IoT): The growing number of connected devices will create a more interconnected web, enabling seamless communication and data exchange.
- Blockchain Technology: Blockchain technology is expected to revolutionize online transactions, providing secure and transparent data management.
Frequently Asked Questions
Q: What is the difference between the internet and the World Wide Web?
A: The internet is a global Network of interconnected computers, while the World Wide Web is a system of interconnected hypertext documents accessed via the internet. The internet provides the Infrastructure-2/”>INFRASTRUCTURE for the web to function.
Q: How do I create a website?
A: You can create a website using a web development platform like WordPress, Wix, or Squarespace, or by Learning HTML, CSS, and JavaScript.
Q: What are some popular web browsers?
A: Some popular web browsers include Google Chrome, Mozilla Firefox, Microsoft Edge, and Safari.
Q: What are some common web security threats?
A: Common web security threats include phishing scams, malware infections, and data breaches.
Q: How can I stay safe online?
A: You can stay safe online by using strong passwords, avoiding suspicious links, keeping your software updated, and being aware of phishing scams.
Table 1: Key Web Technologies
| Technology | Description |
|---|---|
| HTML | Language for creating web page structure and content |
| CSS | Language for styling the appearance of web pages |
| JavaScript | Scripting language for adding interactivity and dynamic behavior |
| PHP | Server-side scripting language for creating dynamic web pages |
| Python | General-purpose programming language often used for web development |
Table 2: Impact of the World Wide Web
| Impact | Description |
|---|---|
| Information Access | Made information readily available to anyone with an internet connection |
| Communication | Revolutionized communication, enabling people to connect across the globe |
| E-commerce | Enabled businesses to sell goods and services online, creating a global marketplace |
| Social Media | Fostered the rise of social media platforms, connecting people and facilitating online communities |
| Education | Became a valuable resource for education, providing access to online courses, research materials, and educational resources |