In this video, Bill Ferguson explains how subnetting in your head can help you pass certifications such as CCNA, Network +, A+, Security+, VMware NSX, and many others.
- [Instructor] You may wonder why you need to know this method. Well, I would say that one of the first reasons is certification and certification tests. If you're going after any certification, then you can expect that there will be some IP addressing laced in if it's anything that has to do with networking. For example, the CCNA certification. Yes, it's all about Cisco gear, and how you work with Cisco equipment, but interlaced throughout that test are also questions about IP subnetting.
In other words, you have to understand the IP subnetting in order to be able to work your way through the smoke and mirrors that is the rest of that question. It's the same thing with Microsoft. There are many Microsoft certifications, but anything that has to do with IT is going to have some element of subnetting in it. CompTIA is the same way. If you're going after an A Plus certification or a Network Plus certification or even a Security Plus certification, you're going to have to know about the IP addressing.
You're going to have to know whether the problem is actually the fact that the IP addressing is wrong, or at least be able to work through that and eliminate that as a possibility. Even VMware, virtualized computers. Virtualized computers still use IP addressing. Any kind of certification that you look at that has anything to do with networking.
Discover how IP addresses are constructed and how to understand them better by relating them to a picture rather than converting binary numbers or memorizing charts. Learn the benefits that subnetting in your head provides in every aspect of IT networking, including routing protocols, access control lists, and network address translation. Then walk through Bill's four-step method, which leverages the rules that were used to create the original classful IP addressing schemes. Using this method, students can learn to "see" the IP addresses for each subnet. Watch the technique in action, and then practice what you've learned using the audio guides in chapter five, which provide auditory cues as you subnet in your head.
- The benefits of subnetting
- Class A, B, and C IP addressing
- The four-step subnetting method
- Troubleshooting IP topologies and IP host address ranges
- Audio cues for the four-step method