Objectives

After reading this chapter, you should be able to answer the following questions:

1. Who manages and pays for the Internet?
2. How do the Internet’s networking components interact?
3. What data transmissions and protocols does the Internet use?
4. Why are IP addresses and domain names important for Internet communications?
5. What are FTP and Telnet, and how do I use them?
6. What are HTML and XML used for?
7. How do e-mail and instant messaging work, and how are messages kept secure?