Cisco Certified Network Professional 2025 – 400 Free Practice Questions to Pass the Exam

The command used to verify pending changes in MST (Multiple Spanning Tree) configuration is "show pending." This command is specifically designed to display any changes that have not yet been confirmed or applied in the MST configuration. When network engineers are making adjustments to the spanning tree settings, it’s crucial to check what changes are pending to ensure that the desired configurations will take effect without causing disruption in the network.

In scenarios where multiple changes are being made, the ability to see what is still pending allows for better management of network modifications and prevents unintended consequences that could arise from unreviewed changes.

The other options, while related to spanning tree or MST, do not focus specifically on pending configurations. For example, "show mst status" provides information about the current status and configurations of the MST regions but does not highlight modifications that are yet to be applied. Similarly, "verify mst config" is not a recognized command in Cisco IOS and wouldn't yield results, and "show spanning-tree details" gives comprehensive spanning tree information but does not focus specifically on pending changes like the correct command does.