Dell EMC Specialist – Systems Administrator, VNX — Question 23

A network administrator is designing a Layer 2 topology and requires separate spanning-tree roots to avoid having a given port blocked for all instances. Which spanning-tree protocols will meet this need?

Answer options

Correct answer: B

Explanation

The correct answer is B, as RSTP-PV and MSTP allow for multiple spanning-tree instances, which enables separate root bridges for different VLANs, preventing any single port from being blocked across all instances. Options A and C are incorrect because they do not support multiple instances in the same way, and option D, while it includes RSTP, lacks the capability of MSTP to provide the necessary flexibility.