IP地址152.7.77.159和152.31.47.252同属于哪一个地址块?()
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IP地址152.7.77.159和152.31.47.252同属于哪一个地址块?()
A.152.64/12
B.153.40/9
C.152.40/13
D.152.0/11
正确答案:A
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