Decoding the Digital World: Understanding How the Internet Works in Everyday Life

1. What is the primary role of routers within the physical infrastructure of the Internet?

• A. To store and distribute data

• B. To connect customers to the ISP network
• C. To translate domain names into IP addresses
• D. To direct data packets across the network

2. Which protocol is responsible for ensuring that packets are delivered reliably and in the correct order at the destination?

• A. Internet Protocol (IP)
• B. Transmission Control Protocol (TCP)
• C. Hypertext Transfer Protocol (HTTP)
• D. Simple Mail Transfer Protocol (SMTP)

3. What is the purpose of the Domain Name System (DNS)?

• A. To encrypt communication on the Internet
• B. To provide access to the Internet
• C. To manage vast amounts of traffic in data centres
• D. To translate domain names into IP addresses

4. What does the term 'bandwidth' refer to in the context of Internet infrastructure?

• A. The time it takes for data to travel from its source to its destination
• B. The number of routers a packet has to pass through
• C. The amount of data that can be transmitted over an Internet connection in a given amount of time
• D. The capacity of routers to direct data packets

5. What is the significance of the Internet backbone?

• A. It connects home routers to the Internet

• B. It translates domain names into IP addresses
• C. It provides redundancy and reliability in Internet traffic routes
• D. It is responsible for the packetisation of data