题目是这样的
network 206.143.5.0 was assigned to the acme company to connect to its ISP.the administrator of acme would like to configure one router with the commands to access the internet.which commands could be configured on the gateway router to allow internet access to the entire network (choose two)
A.gateway(config)#ip route 0.0.0.0 0.0.0.0 206.143.5.2
B.gateway(config)#router rip
C.gateway(config-router)#network 206.143.5.0
D.gateway(config)#router rip
E.gateway(config-router)#network 206.143.5.0 default
F.gateway(config)#ip route 206.143.5.0 255.255.255.0 default
G.gateway(config)#ip default-network 206.143.5.0