I'm looking at some subnetting practice question word problems, and I'm coming up with a different answer than the one listed as correct. The question is very involved, but the part I have a problem with is if you take a network of 10.0.0.0/20 (255.255.240.0), what is the full range of addresses? I would say 10.0.0.0 to 10.0.15.255, but the multiple choice answers all include something like 10.0.15.160 for the upper end of the range. Where are they getting 160 for the last octet???
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