A prep test I am using has a question for which I disagree with the answer. 
Here is the question�

If I had a Class B address, what subnet mask would I use if I wanted to
split it into 8 class C addresses?


a.255.255.240.0 
b.255.255.255.0 
c.255.255.248.0 
d.255.255.254.0 
 
The answer from the test is �c�.

I think the answer is not even listed; 255.255.224.0 because to add eight
additional subnets we need 2^3=8 bits of subnet which equates to 224 of
mask.  Am I right or wrong?

Rich

 

 



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