Hello,
When you are asked for the number of subnets in the exam CCNA 640-607:
ie. 150.10.10.10 255.255.255.252.0
-> subnet bits = 6
-> supported subnets: 2^6 or 2^6-2 ??
In other words: if noting is mentioned in the question, do I have to
count zero-subnet and broadcast subnet as valid ? or in
I think it depends on the question. I've found that most exams will give a
little hint, either the answer doesn't support both choices or the question
will have some comment of suitability of subnets.
if I had to choose though, I'd choose 2^6-2, since it wasn't till 12.0 that
the ip-subnet zero wa
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