Which of the following statements is true about the network? 7K-3 and 7k-4 have the following configuration. Spanning-tree mst 1 priority 24576 Spanning-tree mst configuration name DCICN revision 2 in

7K-3 cannot be the MST root for instance 1 because MST mode is not enabled - the required 'spanning-tree mode mst' command is absent from the configuration.

7K-4 also cannot be the MST root because MST has not been activated with 'spanning-tree mode mst', regardless of the priority value configured.

Although both switches share the same priority of 24576 for MST instance 1, this is irrelevant because the MST mode activation command is missing on both devices.

On Cisco Nexus and IOS platforms, MST must be explicitly activated with the 'spanning-tree mode mst' command. The configuration shown only defines an MST region name, revision, instance-to-VLAN mapping, and bridge priority - without the mode command the switch continues to run the default Rapid-PVST+ mode, so MST is not actually active on either device.