A.202.130.0.0 B.202.0.0.0 C.202.130.191.33 D.202.130.191.0
A.255.255.255.0 B.255.255.255.128 C.255.255.255.192 D.255.255.255.224
A.中繼器 B.路由器 C.網(wǎng)橋 D.網(wǎng)關(guān)