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

The definition of a requirement for Multiple Spanning Tree (MST) regions is accurately captured by the choice that specifies the name must be the same across all switches and can be up to 32 characters long. In MST, a region is defined by its configuration and must be consistent across all switches participating in that region. This includes the MST region name, which enables switches to recognize and manage the topology they belong to effectively. Having a consistent name helps in maintaining proper spanning tree calculations and ensuring that all switches treat the topology similarly.

In addition, the limitation on name length (up to 32 characters) is stipulated by the MST standards, emphasizing the need to adhere to these specifications to ensure compatibility and functionality within the region.

The other options do not represent valid requirements for MST regions: each region does not require a unique MAC address; switches do not need to share a single IP address, as IP addressing in VLANs can vary; and while having at least one switch as a root bridge is essential for spanning tree protocols, it is not a specific requirement unique to MST regions.