Understanding How the Internet Works

The video tutorial, led by Paola and Vint, explores the history and structure of the internet. It covers the development of internetworking protocols by Vint Cerf and Bob Kahn, the concept of the internet as a network of networks, and the importance of protocols. The tutorial explains IP addresses, including the transition from IPv4 to IPv6, and the role of the Domain Name System (DNS) in associating domain names with IP addresses. It also highlights the vulnerabilities of DNS, such as DNS spoofing, and emphasizes the scalability of internet protocols.

Who were the key figures in inventing the internetworking protocol?

• Bill Gates and Steve Jobs

• Vint Cerf and Bob Kahn

• Larry Page and Sergey Brin

• Tim Berners-Lee and Marc Andreessen

What is the internet primarily described as?

• A network of networks

• A collection of websites

• A single large network

• A series of tubes

What is a protocol in the context of the internet?

• A hardware device

• A set of rules and standards

• A type of computer

• A programming language

What is an IP address similar to in the physical world?

• A phone number

• A mailing address

• A credit card number

• A social security number

How many bits long is a traditional IPv4 address?

• 128 bits

• 64 bits

• 32 bits

• 16 bits

What is the main reason for transitioning to IPv6?

• Compatibility with older devices

• More unique addresses

• Faster internet speeds

• Better security

What does the Domain Name System (DNS) do?

• Encrypts internet connections

• Translates domain names to IP addresses

• Stores website data

• Manages internet traffic

What is an example of a cyberattack on DNS?

• DDoS attack

• DNS spoofing

• Man-in-the-middle attack

• Phishing

How are DNS servers organized to handle the vast number of requests?

• In a centralized database

• In a peer-to-peer network

• In a distributed hierarchy

• In a single large server

Why was DNS originally created?

• For commercial use

• For social networking

• For government and educational institutions

• For online gaming