Week 7: Internet and World Wide Web

Summary

This discussion explores the history and significance of the internet and the World Wide Web, tracing its origins from the military-focused ARPANET to the modern interconnected network we know today. Key concepts include the evolution of communication protocols like TCP/IP, the role of telecommunications companies, and how data is transmitted via packet and circuit switching. The emergence of the World Wide Web by Tim Berners-Lee revolutionized information sharing, with web browsers and search engines facilitating user access. While the internet offers vast opportunities for communication and e-commerce, it also presents challenges like privacy concerns and misinformation, underscoring the need for responsible usage.

Takeaways

• 🌐 The internet is defined as an interconnected network of millions of computers, allowing users to send and receive various types of information.
• 📅 The history of the internet began with ARPANET, initially developed for military use by the US Department of Defense, and evolved into the global network we use today.
• 🔌 Major telecommunications companies, such as PLDT and AT&T, have played a crucial role in building the infrastructure needed for internet connectivity.
• ⚡ Fiber optic cables are essential for high-speed data transmission, and various companies are utilizing this technology to enhance internet services.
• 📡 Data travels through the internet using protocols like TCP/IP and techniques such as packet switching and circuit switching, enabling efficient communication.
• 🖥️ Servers and clients are fundamental components of the internet, where servers store data and clients retrieve information.
• 📞 The Domain Name System (DNS) acts as the phone book of the internet, translating domain names into numerical IP addresses to facilitate navigation.
• 🌍 The World Wide Web (WWW), invented by Tim Berners-Lee, is a user-friendly information system that allows for the sharing of content across the internet.
• 🔍 Search engines, like Google and Yahoo, help users find information on the internet, employing various techniques for effective searches.
• ⚖️ While the internet offers numerous advantages, such as global communication and access to information, it also presents challenges, including privacy concerns and the spread of misinformation.

Q & A

What is the definition of the internet as discussed in the transcript?

The internet is defined as an interconnected network of millions of computers, allowing end users to send and receive various types of information such as emails, texts, videos, and computer programs.

What are some key telecommunications companies mentioned in the transcript?

Key telecommunications companies mentioned include PLDT (Philippine Long Distance Telephone Company) and AT&T, which is significant in the U.S. market.

What was the origin of the internet and what was its initial purpose?

The internet originated from the ARPANET, which was initially a military network used by the U.S. Department of Defense for secure communication during wartime.

When is the official birthday of the internet recognized?

January 1, 1983, is considered the official birthday of the internet, marking the establishment of standard communication protocols.

What are the two types of switching methods discussed in the transcript?

The two types of switching methods are circuit switching, which offers a dedicated transmission channel, and packet switching, which allows data to be sent in packets that can take different paths through the network.

What role do DNS servers play in the internet?

DNS servers function like a phone book for the internet, translating domain names into IP addresses, enabling communication across network devices.

Who invented the World Wide Web and when was it made public?

The World Wide Web was invented by Tim Berners-Lee and was made public in 1991.

What is the function of a web browser?

A web browser is an application that retrieves, presents, and navigates information resources on the World Wide Web, allowing users to access web pages.

What are some advantages and disadvantages of using the internet as mentioned in the transcript?

Advantages include global communication, e-commerce, and access to abundant information. Disadvantages involve issues like the loss of personal information, spread of fake news, internet addiction, and health concerns.

What is the significance of HTML in web development?

HTML, or Hypertext Markup Language, is a standard markup language used for creating web pages, providing the structure and links necessary for web navigation.