JNCIS-ENT: Juniper Networks Certified Specialist – Enterprise Routing and Switching (2023) — Question 35

Which two statements are true about nonstop bridging (NSB)? (Choose two.)

Answer options

• A. NSB does not require all participating Routing Engines to run the same version of the Junos OS.
• B. NSB can be enabled under the protocols layer2-control hierarchy.
• C. NSB requires you to configure graceful Routing Engine switchover (GRES).
• D. NSB does not require you to configure graceful Routing Engine switchover (GRES).

Correct answer: B, C

Explanation

Option B is correct because nonstop bridging can indeed be enabled under the protocols layer2-control hierarchy. Option C is also correct as NSB requires the configuration of graceful Routing Engine switchover (GRES) to function properly. Options A and D are incorrect since they misrepresent the requirements for NSB regarding the Junos OS version and GRES configuration.