IN THIS CHAPTER
Getting a handle (or two) on the binary system
Digging into IP addresses
Finding out how subnetting works
Understanding private and public IP addresses
Looking at network address translation
Finding out how DHCP works
Understanding how DNS works
Transfer Control Protocol/Internet Protocol — TCP/IP — is the basic protocol by which computers on a network talk to each other. Without TCP/IP, networks wouldn’t work. In this chapter, I introduce you to the most important concepts of TCP/IP.
Before you can understand the details of how TCP/IP — in particular, IP — addressing works, you need to understand how the binary numbering system works because binary is the basis of IP addressing. If you already understand binary, please skip right over this section to the next main section, “Introducing IP Addresses ...