Refer to the topology and partial configurations shown in the exhibit.
The network administrator has finished configuring the NewYork and Sydney routers and issues the command ping Sydney from the NewYork router. The ping fails.
What command or set of commands should the network administrator issue to correct this problem?
A . Sydney(config)# interface s0/0
Sydney(config-if)# cdp enable
B . Sydney(config)# interface s0/0
Sydney(config-if)# no shut
C . Sydney(config)# line vty 0 4
Sydney(config)# login
Sydney(config)# password Sydney
D . Sydney(config)# ip host Sydney 10.1.1.9
E . Sydney(config)# interface s0/0
Sydney(config-if)# ip address 10.1.1.5 255.255.255.252
NewYork(config)# ip host Sydney 10.1.1.5
Answer: E
Explanation:
The IP addresses on the two Serial interfaces of two routers are not in the same subnet so they could not recognize each other and the ping failed. Therefore we must correct the IP address of one of the router so that they are in the same subnet.