多项选择题
A.每台交换机的成本更低 B.可扩展性更高 C.转发率更低 D.需要的电源插座数目更少
A.ip route 192.168.0.0 172.16.0.0 255.255.0.0B.ip route 192.168.0.1 172.16.0.0 255.255.0.0C.ip route 172.16.0.0 255.255.0.0 192.168.0.1D.ip route 172.16.0.0 255.255.0.0 192.168.0.2
A.pingB.ipconfigC.ifconfigD.nslookup
A.255.255.248.0B.255.255.255.0C.255.0.224.0D.255.255.255.248
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