An organization has a Class B Network and wishes to form subnets for 60…
2017
An organization has a Class B Network and wishes to form subnets for 60 departments. The subnet mask would be:
- A.
255.255.64.0
- B.
255.255.0.0
- C.
255.255.252.0
- D.
255.255.255.0
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Correct answer: C
The correct answer is Option C. A default Class B network uses a mask of 255.255.0.0 (/16). To create 60 subnets, we need x bits such that 2x >= 60, which gives x = 6 bits. Borrowing 6 bits from the third octet creates a subnet mask of 11111100 in binary, which evaluates to 252. Thus, the mask is 255.255.252.0.