路由器R1的Fa0/0端口IP地址为192.168.10.1/24,Fa0/1端口的IP地址为172.16.1.1/24,现为该路由器配置DHCP,下列配置DHCP排除地址正确的是()
A.R1(config)#ip dhcp excluded-address 192.168.10.1 -------------------R1(config)#ip dhcp excluded-address 172.16.1.1 B.R1(config)#ip dhcp excluded-address 172.16.1.1 C.R1(config)#ip dhcp excluded-address 192.168.10.1 D.R1(config)#ip dhcp excluded-address 192.168.10.1 255.255.255.0 -------------------R1(config)#ip dhcp excluded-address 172.16.1.1 255.255.255.0