单项选择题

路由器端口的IP地址为202.100.73.18/22,则该端口的网络地址是()
A.202.100.70.0
B.202.100.73.0
C.202.100.72.0
D.202.100.128.0

A.100.73.18/22,则该端口的网络地址是()
A.202.100.70.0
B.202.100.73.0
C.202.100.72.0
D.202.100.128.0
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