IPv4 Subnetting – Determining how many bits to borrow
This video shows how to solve a subnetting problem: You are designing a subnet mask for the 172.21.0.0 network. You
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usable hosts
IPv4 Subnetting – Counting subnets and usable hosts per subnet
This video demonstrates how to complete a subnetting problem: How many subnets and hosts per subnet can you get from
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