This 350-601 practice question tests your understanding of 350-601 exam topics. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A data center network uses MST with multiple instances. Different VLANs are mapped to different MST instances to utilize multiple spanning tree paths. Which MST parameter must be identical on all switches in the same region to ensure proper operation?
MST region name and revision number
Correct: region name and revision must match for region consistency.
Port path cost
Why wrong: Port cost can vary per switch.
Bridge priority
Why wrong: Bridge priority can differ per switch; root selection still works.
Max age timer
Why wrong: Timer values can differ, but may cause issues; not required identical.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
MST region name and revision number
MST region requires consistent revision number, name, and VLAN-to-instance mapping on all switches in the region.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
MST region name and revision number
Why this is correct
Correct: region name and revision must match for region consistency.
Related concept
Access ports place end devices into a single VLAN.
Port path cost
Why it's wrong here
Port cost can vary per switch.
Bridge priority
Why it's wrong here
Bridge priority can differ per switch; root selection still works.
Max age timer
Why it's wrong here
Timer values can differ, but may cause issues; not required identical.
Common exam traps
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
A help-desk technician troubleshoots why a newly connected PC cannot reach shared printers on the same floor. The cable is good, the switch port is active, but the PC is in VLAN 20 and the printers are in VLAN 10. The uplink trunk only allows VLAN 10. A trunk being up does not mean every VLAN crosses it.
What to study next
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 350-601 questions on switching, trunking, and access-port configuration.
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FAQ
Access ports place end devices into a single VLAN.
The correct answer is: MST region name and revision number — MST region requires consistent revision number, name, and VLAN-to-instance mapping on all switches in the region.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related 350-601 questions on switching, trunking, and access-port configuration.
Access ports place end devices into a single VLAN.
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Last reviewed: Jul 4, 2026
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.
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