Fundamentals of Internet Navigation

Answers and Descriptions

1. Answer: A URL (Uniform Resource Locator) is the address of a resource on the Internet. Its main components are the protocol (e.g., http:// or https://), domain name (e.g., www.example.com), and path (e.g., /page).
   Description: Understanding URLs helps students locate specific resources on the Internet. The protocol indicates how data is transferred, the domain name identifies the server, and the path specifies the exact location of the resource.

2. Answer: An IP address is a unique numerical identifier assigned to each device on a network, enabling communication between devices. It ensures accurate data delivery across the Internet.
   Description: IP addresses are fundamental to Internet operation, acting like postal addresses for devices. Students should understand their role in routing data packets.

3. Answer: A domain name is a human-readable address (e.g., www.google.com) that maps to an IP address. Unlike IP addresses, which are numerical, domain names are easier to remember.
   Description: Domain names simplify Internet navigation. This question reinforces the connection between user-friendly names and technical IP addresses.

4. Answer: In the client-server model, a client (e.g., a browser) requests resources from a server, which responds with data. This bi-directional flow enables web browsing.
   Description: Understanding this model helps students grasp how browsers interact with servers to display web pages, a core Internet function.

5. Answer: A DNS translates domain names into IP addresses, enabling browsers to locate servers on the Internet.
   Description: DNS is like an Internet phonebook. This question clarifies its role in making domain names functional.