JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2025) — Question 38

Which two statements about redundant trunk groups on EX Series switches are correct? (Choose two.)

Answer options

• A. Redundant trunk groups use spanning tree to provide loop-free redundant uplinks.
• B. Redundant trunk groups load balance traffic across two designated uplink interfaces.
• C. Layer 2 control traffic is permitted on the secondary link.
• D. If the active link fails, then the secondary link automatically takes over.

Correct answer: C, D

Explanation

Options C and D are correct because Layer 2 control traffic can indeed flow through the secondary link, and the secondary link will automatically take over if the active link fails, ensuring continuity. Options A and B are incorrect; while spanning tree is used in some contexts, redundant trunk groups do not rely on it for redundancy, and they do not load balance traffic across links in the same way as described.