单选题Which IP block is designated for private network use？（）A127.0.x.xB169.0.x.xC190.100.x.xD192.168.x.x
单选题
Which IP block is designated for private network use？（）
A
127.0.x.x
B
169.0.x.x
C
190.100.x.x
D
192.168.x.x
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