Enroll in Cyber Security Courses: eBook and Paperback: Part 2 Subnetting video: • Quick disclaimer before I start! I cater to beginners, so to all my seasoned IT pros, you may want to skip over to the next video to skip the basics and get right to subnet calculations. • Before you build your lab network, it is important that you understand subnetting because they help you understand how computers communicate with each other. In this section I will educate you on the technical components of IP addresses and the concept of subnets. In the next section, we will run some subnetting calculations.