试题出自试卷《HCIA-Datacom V2.0练习题（一）》

问题1选项
A.10.0.0.0~10.255.255.255
B.172.16.0.0~172.31.255.255
C.192.168.0.0~192.168.255.255
D.127.0.0.0~127.255.255.255

B

B类私网地址范围是172.16.0.0~172.31.255.255。