【单选题】【消耗次数：1】
前两段标识网络号后两段标识主机号的地址是以下哪一类地址？
①
A类
②
B类
③
C类
④
D类
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【单选题】
私有B类IP地址地址范围是( )。
①
地址范围：172.16.0.1—172.31.255.254
②
地址范围：192.168.0.1—192.168.255.254
③
类地址范围：192.168.0.1—192.168.0.254
④
地址范围：10.0.0.1—10.255.255.254
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