一台Cisc0路由器R1的第3模块第1端口通过DDN的E1专线与一台远程路由器R2的第4模块第2端口相连,在R
A.Router(cortfig)#interface s4/2Router(config-if)#bandwidth 2048Router(config-if)#ip address 193.42.91.202 255.255.255.252Router(config-if)#encapsulation PPPRouter(config-if)#exit
B.Router(config)#interface a4/2Router(config-if)#bandwidth 2048Router(config-if)#ip address 193.42.91.202 255.255.255.252Router(config-if)#encapsulation PPPRouter(config-if)#exit
C.Router(config)#interface s4/2Router(config-if)#bandwidth 2048Router(config-if)#ip address 193.42.91.201 255.255.255.252Router(config-if)#encapsulation hdleRouter(config-if)#exit
D.Router(config)#interface a4/2Router(config-if)#bandwidth 2048Router(config-if)#ip address 193.42.91.202 255.255.255.252Router(config-if)#encapsulation hdlcRouter(config-if)#exit