In this section, we'll examine the last two fields in an IPV4 header. In addition, we'll review the different classes in IPv4, along with an overview of special and private IP addresses:

• Source and destination address 32-bit: Each field houses the source or destination IPv4 address, which is represented in an easy-to-understand dotted decimal format.

Within each class, there are special and private IP addresses. Let's take a look at those concepts.