JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 103

In a LAN segment, which tie-breaker would spanning tree consider if equal-cost paths exist between two or more switches to the root bridge?

Answer options

• A. port ID
• B. bridge ID
• C. port priority
• D. interface number

Correct answer: B

Explanation

The correct answer is B, bridge ID, as spanning tree protocol uses the bridge ID as the primary tie-breaker when determining which path to use in the event of equal-cost paths. The other options, such as port ID, port priority, and interface number, are not used as the first criteria in this scenario.