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单项选择题
A.1.0.0.0~126.255.255.255
B.128.0.0.0~191.255.255.255
C.192.0.0.0~223.255.255.255
D.224.0.0.0~239.255.255.255
E.240.0.0.0~255.255.255.255
单项选择题
A.B、C
B.A、D
C.B、C、D
D.没有倒换
单项选择题
A.ip routing ipv6
B.ipv6 routing
C.ipv6 unicast-routing
D.ipv6 cef