350-601 Network Practice Question
In a data center running MST, which region configuration parameter must match on all switches for them to be part of the same region?
⚠ Common exam trap
Cisco often tests the specific three required MST region parameters (name, revision, mapping) to trap candidates who confuse global spanning-tree settings or timer values with region membership criteria.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Region name, revision number, and VLAN-to-instance mapping
In Multiple Spanning Tree (MST), switches must agree on three parameters to belong to the same MST region: the region name, the revision number, and the VLAN-to-instance mapping. These parameters are exchanged in MST BPDUs, and if any differ, the switches treat each other as being in different regions, which can lead to suboptimal or incorrect spanning-tree behavior.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Spanning-tree mode
Why it's wrong here
Mode must be MST but individual parameters must match.
- ✗
Bridge priority
Why it's wrong here
Bridge priority can differ within a region.
- ✗
Max-age and hello time
Why it's wrong here
These are global STP timers, not region-specific.
- ✓
Region name, revision number, and VLAN-to-instance mapping
Why this is correct
All three must match for consistent region membership.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 350-601 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-601 exam.