IPv4 Subnetting Practice for the CCNA - Class B

- How to quickly find the subnet using my magic number technique. This tutorial focuses on how to quickly and easily find the IPv4 subnet. In this example, I choose a Class B IPv4 address with a slash 22 subnet mask to demonstrate answering the following questions: 1. What is the magic number? 2. Is it a host, network, or broadcast address? 3. What is the subnet mask in slash notation? 4. What is the network address? 5. What is the broadcast address? 6. What is the first usable