Cisco Certified Network Professional Practice Test

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Prepare for your Cisco Certified Network Professional Test with confidence. Study using flashcards and multiple choice questions, each with detailed hints and explanations. Ensure your success on the exam!

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In the context of spanning tree protocols, what does PVST+ stand for?

Per VLAN Spanning Tree Plus
Primary VLAN Spanning Technology
Physical VLAN Switching Topology
Peer VLAN Security Technology

The correct answer is: Per VLAN Spanning Tree Plus

PVST+ stands for Per VLAN Spanning Tree Plus, which indicates that it is an enhancement of the original Spanning Tree Protocol (STP) designed to support multiple spanning trees per VLAN. This allows for load balancing across links by enabling each VLAN to have its own independent spanning tree instance, which enhances network efficiency and redundancy. By using PVST+, network administrators can optimize traffic flow and improve link utilization since each VLAN can be managed separately. This is particularly beneficial in environments where numerous VLANs are implemented, as it helps avoid bottlenecks that may occur with a single spanning tree instance covering all VLANs. PVST+ operates on Cisco switches and provides backward compatibility with the common Spanning Tree Protocol (CST), showing its adaptability in different network scenarios. The other options, while they may sound plausible, do not accurately reflect the meaning or purpose of PVST+. For example, "Primary VLAN Spanning Technology" and similar phrases do not convey the idea of supporting multiple spanning trees for each VLAN, which is the central concept behind PVST+.