Cisco Certified Network Professional Practice Test 2026 - Free CCNP Exam Practice Questions and Study Guide

Enabling Rapid PVST+ on a Cisco switch is done using the command "spanning-tree mode rapid-pvst." This command specifically sets the spanning-tree protocol mode to Rapid Per-VLAN Spanning Tree, which is a Cisco implementation that provides rapid convergence for each VLAN.

The significance of using Rapid PVST+ lies in its ability to quickly adapt to changes in the network topology, significantly reducing the time it takes for the network to respond to topology changes when compared to older protocols like the traditional IEEE 802.1D Spanning Tree Protocol. This is crucial in modern network environments where downtime can lead to major disruptions.

The other choices provided do not accurately reflect the command needed for enabling Rapid PVST+. For instance, while "spanning-tree mode rstp" could suggest enabling Rapid Spanning Tree Protocol, it lacks the specificity of VLANs associated with Rapid PVST+. Similarly, "spanning-tree enable rapid-pvst" and "spanning-tree type rapid-pvst" are not valid commands in Cisco IOS for enabling this specific feature, as they do not align with the syntax and terminology used in the Cisco command structure.