Introduction to the World Wide Web

World Wide Web (WWW)

• The World Wide Web, also known as W3, was introduced to the public on August 6, 1991, by Tim Berners-Lee.
• It is a graphic interface for the Internet, consisting of a collection of public websites accessible worldwide.
• Client devices such as personal computers, laptops, tablets, and smartphones access web content.
• When fully spelled out, "World Wide Web" should capitalize each "W".

Internet Ownership

• The Internet is not owned by any single entity; rather, it operates through collaboration among government agencies, international groups, and private sector companies.
• TCP/IP protocols allow multiple networks to connect, ensuring the Internet's functionality.
• Infrastructure required for the Internet is owned by individuals and companies; this includes servers, often located in server farms.

Servers and Networking

• Server: A system that provides data to other computers over a network, responding to client requests.
• DNS Server: Configures IP addresses and helps translate domain names into IP addresses.
• Domain Name System (DNS) utilizes domain names as a user-friendly representation of IP addresses.
• The first registered Internet domain was "symbolics.com" on March 15, 1985.

Internet Governance

• ICANN (Internet Corporation for Assigned Names and Numbers) is a nonprofit overseeing IP address allocation and DNS management.

Types of Servers

• File Server: Provides access to files across a network.
• Web Server: Delivers web pages and content to users.
• Print Server: Connects printers to client devices over the Internet.
• Game Server: Centralizes multiplayer game state and interactions.

Data Centers and Applications

• China Telecom's Data Center is the largest in the world, spanning 6.3 million square feet, supporting telecom and cloud computing.
• Google is the most popular search engine, supported by extensive server infrastructure.
• As of Q3 2023, Facebook boasts 3.049 billion monthly active users, making it the largest application globally.

Internet Infrastructure

• Fiber optic cables connect North America to the UK, Japan, and India, essential for Internet functionality.
• Data centers and fiber optic connections are crucial for Internet access; without them, online connectivity wouldn't exist.

Evolution of the Internet in the Philippines

• Bulletin Board Systems (BBS) emerged as early as 1986, with institutions experimenting with local networking.
• The PhilNet project in 1993 initiated significant advancements in Internet connectivity within the country.
• The Philippines gained its first Internet connection on March 29, 1994, through a PLDT network center.

Internet Organizations

• The Internet Society (ISOC) was founded in 1992 to promote standards and access to the Internet globally.
• W3C (World Wide Web Consortium) establishes international standards for the Web and engages in education and outreach.

Browsers and Web Navigation

• Popular web browsers include Opera, first released on April 1, 1995, and Safari, launched on June 30, 2003.
• Understanding how the Web works involves four stages: connection, request, response, and closing.

Website Management and Search Optimization

• Web administrators design and maintain websites, focusing on usability and traffic analysis.
• Search techniques include using specific wording, quotation marks for exact phrases, and eliminating unwanted results with minus signs.
• Search engines utilize spiders and crawlers to index web pages systematically.

Google Search Tips

• Use quotes for exact phrases to refine search results.
• Utilize the asterisk (*) as a wildcard for unknown words within quotes.
• Exclude results containing certain words by placing a minus sign before them.
• Search specific websites by appending "site:[website] [keywords]" to the query.