Refer to the exhibit. The network containing router B is experiencing problems. A network associate has isolated the issue in this network to router B. What action can be performed to correct the network issue?

The issue with Router B's FastEthernet interface is that it is in an administratively down state (shutdown). The 'no shutdown' command will bring the interface up, allowing it to pass traffic. This is a common configuration command that reactivates an interface that was manually disabled. Clock rate is for serial DCE interfaces, description is just a label, and ip address is for assigning addressing (not needed if already configured but interface is shutdown).