Refer to the exhibit. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted add

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问题 Refer to the exhibit. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?

选项 A、        255.255.255.0
B、        255.255.254.0
C、        255.255.252.0
D、        255.255.248.0

答案B

解析 310个主机,那么2的X次方-2>=310
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