From the course: Cisco Certified Support Technician (CCST) Networking Cert Prep

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Subnetting practice exercise #2

Subnetting practice exercise #2

From the course: Cisco Certified Support Technician (CCST) Networking Cert Prep

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Subnetting practice exercise #2

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(gentle music) - [Presenter] In this video, I want to challenge you with a subnetting practice exercise. Here is the scenario. Your company has been assigned a class B network. It's 172.20.0.0., and it's got the default /16 subnet mask, and you want to use that class B network at one of your sites. However, you're going to be breaking that up into different subnets for the different departments, but there's a requirement. The subnets that you create by extending that subnet mask beyond 16 bits, each subnet should accommodate at least 100 hosts, because the longer you make your subnet mask, the fewer number of hosts you can assign to each subnet. So the question is, what is the subnet mask you would use to accommodate 100 hosts while not using more host bits than you need? Because if you use more host bits, you're subtracting the number of subnets you can create, so it's sort of a balancing act. You might want to pause the video right now, do your calculation, and then resume and we'll…

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