However, just after a junior network administrator made changes to the Sligo router - Sligo LAN users have been unable to communicate with users ported to the Belfast and Dublin routers. Please resolve any issues on the Sligo router that may have caused this problem.

The routers have been configured with the following specifications.

The routers are named Sligo, Belfast and Dublin.
RIP is the routing protocol.
The clocking is provided on the Serial 0 interfaces.
The password on the Sligo router is "cisco'.

Good job!

Write down the Sligo router config:

E0: 192.168.149.1
S0: 192.168.199.5 (DCE - clock rate)
RIP routing protocol
Host B is serially connected to the Sligo router

Go to the CLI:

The "show run" command will display the current configuration.
Compare the output with your written configs.

• Are there any "shutdown" interfaces? No - we don't have to worry here -- however, if you see the word "shutdown" under an interface config -- issue a "no shut" command on the specific interface.
• Are all the interface IP addresses correct? No - serial0 - should be 192.168.199.5 w/ 255.255.255.252
• Is the clock rate applied to the DCE serial interface? No - apply to serial0
• Is RIP completely configured? No - network 192.168.199.0 is missing

Okay -- now write down your input statements:

int s0
ip address 192.168.199.5 255.255.255.252
clock rate 56000
no shut
exit
router rip
network 192.168.199.0

Now input your statements into the Command Line Interface on the Sligo router. You can confirm w/ "ping" commands to the interfaces on Belfast and Dublin routers but you don't really have time. No matter what -- if you go over 15 minutes on an actual exam Lab - get to the "Privilege EXEC mode" prompt and input "copy run start".