JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 63

What is a purpose of using a spanning tree protocol?

Answer options

• A. to look up MAC addresses
• B. to eliminate broadcast storms
• C. to route IP packets
• D. to tunnel Ethernet frames

Correct answer: B

Explanation

The correct answer is B, as the primary function of spanning tree protocol is to prevent loops in network topologies, which can cause broadcast storms. Options A, C, and D are incorrect because they refer to different network functions that are not related to the purpose of spanning tree protocol.