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What is the World Wide Web (WWW) and what is a common starting point for many Web sites?
The WWW is a collection of public websites accessible via the internet, and a common starting point is the homepage.
Describe the components that make up a URL.
A URL consists of the protocol (e.g., HTTP), the domain name, and the specific path to the web page.
What distinguishes HTTP from HTTPS?
HTTPS includes an 'S' which stands for 'Secure' and means that the data transferred between the browser and the website is encrypted.
What is the primary function of a web browser?
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What role do search engines play in web browsing?
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Explain the significance of the URL structure using the example 'http://www.yahoo.com/weather/Lahore/weather.html'.
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What is a web page and how does it differ from a website?
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Discuss the importance of having a unique URL for each web page.
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Study Notes
Introduction to the Web
- Commonly referred to as the World Wide Web (WWW).
- Encompasses all public websites accessible via the internet on various devices.
World Wide Web (WWW)
- A website consists of a collection of related web pages.
- Each webpage is identified by a unique URL (Uniform Resource Locator).
- Websites typically have a homepage serving as the main reference point.
- An individual document on the web is termed a web page.
Understanding URL
- URL represents the complete address of a specific web page.
- Each page has a distinct URL, ensuring uniqueness.
- Structure includes protocol, domain name, and path.
- Example of a URL:
http://www.yahoo.com/weather/Lahore/weather.html. - HTTP (HyperText Transfer Protocol) resolves a URL to the IP address of the hosting server for page retrieval.
http vs https
- HTTPS is the secure version of HTTP, ensuring encrypted data transfer.
- The 'S' stands for 'Secure', indicating a protected communication channel between the browser and website.
Web Browsing Software
- Web browsers are programs that facilitate browsing web pages.
- They retrieve, display, and enable navigation through various types of information on the internet, including text, images, and videos.
Search Engines
- Defined as online tools that query an index of documents based on user-specified terms.
- Typically refer to large web-based engines that explore vast numbers of web pages.
- Common features include:
- Spider: indexes documents.
- Database: stores indexed content.
- Algorithm: determines search relevance.
- Regular updates enhance search results and ranking processes.
Web Evolutions
-
WEB 1.0 (1990-2005):
- Characterized by basic web pages and HTML.
- Initial development of e-commerce and Java applications.
-
WEB 2.0 (2006-present):
- Focuses on social media platforms and global internet accessibility.
- Introduction of web applications and data monetization strategies.
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WEB 3.0 (Forthcoming):
- Anticipates advancements in NFTs (Non-Fungible Tokens) and the Semantic Web.
- Envisions the Metaverse incorporating AR (Augmented Reality) and VR (Virtual Reality).
- Predicts the rise of blockchain technology, AI (Artificial Intelligence), and enhanced interoperability.
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Description
This quiz covers the basics of the World Wide Web, also known as WWW. It explores the definition of the web, its components, including websites and web pages, and their unique URLs. Test your knowledge about how users access these resources through the internet.
