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单选题
You are working in a data center environment and are assigned the address range 10.188.31.0/23.You areasked to develop an IP addressing plan to allow the maximum number of subnets with as many as 30 hostseach.Which IP address range meets these requirements?()
A

10.188.31.0/27

B

10.188.31.0/26

C

10.188.31.0/29

D

10.188.31.0/28

E

10.188.31.0/25


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