You need 500 subnets, each with about 100 usable host addresses per subnet. What network mask will you assign using a class B network address?
Pick an option to check yourself, or open the answer below.
Show answer & explanation
Correct answer: B. 255.255.255.128
Explanation
500 subnets need 9 bits; 7 bits remain for hosts (126 usable). /25 = 255.255.255.128.
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