3. (6 pts) In the discussion of how the web works, you learned that a browser may make several HTTP requests when loading a web page. Use Chrome's Developer Tools to find out how many requests, for what resources and from where the browser makes when loading the home page for the CS 112 textbook, : ? Is there any difference when you immediately request the page again? Explain. 4. (24 pts) Answer the following Review Questions found at the end of Chapter 3. Each question is worth 4 points. 13. Paul Baran proposed two groundbreaking design ideas for the structure and behavior of the ARPANet. Describe these design ideas and the benefits they provide. 15. Internet communications are defined by a set of protocols called TCP/IP. What do TCP and IP stand for, and what is the role of each protocol in transmitting and receiving information? 16. What is an IP address? What steps are involved in mapping a computer's domain name (e.g., www.google.com) to its IP address? 19. What specific features did the Mosaic browser include that were not available in earlier browsers? How did these features help make the Web accessible to a larger audience? 21. What does HTTP stand for, and what is its role in Web communications? 23. How does caching improve the performance of a Web browser