In simplest way possible, describe the 'impact' of shifting an IP subnet mask bit one position to the left (assume the starting mask is 255.255.255.0) what does that change accomplish? - Quora
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Full Subnet Masking in 15 minutes - How to get Network, Broadcast, 1st & last host address - YouTube
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ip - How do you calculate the prefix, network, subnet, and host numbers? - Network Engineering Stack Exchange
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