The network 172.12.0.0 needs to be divided into subnets where each subnet has the capacity of 458 IP addresses.What would be the correct subnet mask to accomplish this division keeping the number of subnets at the maximum? （）
- A、255.255.254.0
- B、255.255.254.1
- C、255.255.254.2
- D、255.255.254.3
正确答案:A
答案解析:有
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