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You are troubleshooting a serial interface and presented with a "Serial0/0/0 is administratively down, line protocol is down" status. What could be the possible problem for this line status? (Choose two)
the router interface is configured with the "shutdown" interface configuration command
the clock rate interface configuration command is missing
a loop exists in the circuit
a CSU or DSU hardware problem has occurred
A duplicate IP address exists
The CLI status output "Serial0/0/0 is administratively down, line protocol is down" means that either the router interface is configured with the "shutdown" interface configuration command or a duplicate IP address exists. If there are duplicate addresses, resolve the conflict by changing one of the IP addresses. Also, don't forget to issue the command "no shutdown" to bring the interface into up status assuming all other configurations are entered correctly.
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