What are the advantages of packet switching in comparison to circuit switching? 2. what are the five essential elements of the early web that are still the core features of the modern web? 50 chapter 1 how the web works 3. describe the relative advantages and disadvantages of web-based applications in comparison to traditional desktop applications. 4. what is an intranet? 5. what is a dynamic web page? how does it differ from a static page? 6. what does web 2.0 refer to? 7. describe the four layers in the four-layer network model. 8. what is the internet protocol (ip)? why is it important for web developers? 9. what is the client-server model of communications? how does it differ from peer-to-peer? 10. discuss the relationship between server farms, data centers, and internet exchange points. be sure to provide a definition for each. 11. describe the main steps in the domain name registration process. 12. what are the two main benefits of dns? 13. how many levels can a domain name have? what are generic top-level domains? 14. describe the main steps in the domain name address resolution process. 15. how many requests are involved in displaying a single web page? 16. how many distinct domains can be hosted at a single ip address? 17. what is the lamp stack? what are some of its common variants?