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Refer to the exhibit below. A network engineer does not have connectivity between Router _R1 and Router _R2. From the output of the command shown below, what seems to be the problem?

The buffer of the serial interface is Full.

The serial interface has been configured to work with Half-duplex.

The interface Serial 1/0 is administratively down.

The clockrate interface configuration is too high for the serial interface.

The type of cable attached to the serial interface is wrong.



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