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!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What defines when RSTP triggers a topology change?

When a designated port fails
When a non-edge port transitions to the forwarding state
When a root port becomes inactive
When the switch receives unnecessary BPDUs

The correct answer is: When a non-edge port transitions to the forwarding state

Rapid Spanning Tree Protocol (RSTP) utilizes the concept of topology change notifications to respond to changes in the network. The correct choice is tied to an essential aspect of how RSTP maintains the stability and efficiency of a network. When a non-edge port transitions to the forwarding state, RSTP recognizes that this port is now actively participating in the network's traffic, which signifies a possible change in the topology. This transition indicates that there may now be an alternate path that defines a new logical layout of the network, impacting data traffic flow. RSTP must react to this change to ensure that it maintains loop-free routing and optimal paths for data transmission. Consequently, when a non-edge port transitions to the forwarding state, RSTP triggers a topology change, allowing the network to adjust and maintain its efficiency. This process helps to ensure that all devices in the network are aware of the new topology, improving overall network resilience and performance. Understanding this behavior of RSTP is crucial when designing and managing networks that rely on rapid convergence and stability following changes in the network structure.