The
show controllers serial 0 command will show you whether either a DTE or DCE cable is connected to the interface. If it is a DCE connection, you need to add clocking with the clock rate command.
2. Which of the following commands will display the current IP addressing and the layer 1 and 2 status of an interface?
The commands
show protocols,
show interfaces, and
show ip interface will show you the layer 1 and 2 status and the IP addresses of your router's interfaces.
3. You want to totally reinitialize the router and replace the current running-config with the current startup-config. What command will you use?
To completely replace the running-config with the startup-config, you must reload the router. Note : You may have picked option C, which isn't a bad answer. Remember, though, it doesn't replace the configuration, it appends it.
4. You type show running-config and get this output:
With the
show interfaces command, you can view the configurable parameters, get statistics for the interfaces on the router, verify if the interfaces are shut down, and see the IP address of each interface.
7. What command do you type to save the configuration stored in RAM to NVRAM?
Options
A. Router(config)#copy current to starting
B. Router#copy starting to running
C. Router(config)#copy running-config startup-config
To copy the running-config to NVRAM so that it will be used if the router is restarted, use the
copy running-config startup-config command (
copy run start for short).
8. You type Router#sh ru and receive an % ambiguous command error. Why did you receive this message?
Options
A. The command requires additional options or parameters.
B. There is more than one show command that starts with the letters ru.
C. There is no show command that starts with ru.
D. The command is being executed from the wrong router mode.
Correct Answer: There is more than one show command that starts with the letters ru.
Explanation:
The
% ambiguous command error means that there is more then one possible command that starts with
ru. Use a question mark to find the correct command.
9. You need to find the broadcast address used on a LAN on your router. What command will you type into the router from user mode to find the broadcast address?
The command
show ip protocols will actually show you the broadcast address for each interface - too bad it isn't a possible answer. Your best answer is
show interfaces, which will provide the IP address and mask for each interface.