Internet Protocol (IP) Addressing and Subnet Mask
The Internet Protocol address (IP address) is either a class "A," "B," or "C" address (there are also class "D" and "E" addresses I will not cover). A class “A” network supports many more nodes per network than either a class "B" or "C" network. IP addresses consist of four fields. The purpose of breaking down the IP address into four fields is to define a node (or host) address and a network address. Figure 12-3 summarizes the relationships between the classes and addresses.
Figure 12-3. Comparison of Internet Protocol (IP) Addresses
These bit patterns are significant in that the number of bits ...