单项选择题

196.121.2.3的直接广播地址是（）

A.196.255.255.255
B.196.121.255.255
C.196.121.2.255
D.255.255.255.255

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单项选择题

A.128.1.2.255
B.128.1.255.255
C.128.255.255.255
D.255.255.255.255

单项选择题

A.10.255.255.255
B.10.124.255.255
C.10.124.224.255
D.255.255.255.255

单项选择题

A.125.255.255.255
B.125.100.255.255
C.125.100.10.255
D.以上都不对