CCNA: Cisco Certified Network Associate — Question 720

How does Rapid PVST+ create a fast loop-free network topology?

Answer options

• A. It uses multiple active paths between end stations.
• B. It requires multiple links between core switches.
• C. It maps multiple VLANs into the same spanning-tree instance.
• D. It generates one spanning-tree instance for each VLAN.

Correct answer: D

Explanation

The correct answer is D, as Rapid PVST+ indeed generates a separate spanning-tree instance for every VLAN, allowing for rapid convergence and loop-free topologies. Options A and B are incorrect because they describe different scenarios that do not specifically relate to the functionality of Rapid PVST+. Option C is also incorrect, as it misrepresents how VLANs are handled in this protocol.