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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What safety measure should be taken when using BPDU Filter?

Use with caution
Enable on all switches
Disable by default on all ports
Configure before enabling any port

The correct answer is: Use with caution

When considering the use of BPDU Filter, the emphasis on using it with caution is essential due to the potential implications it has on the Spanning Tree Protocol (STP) operations within a network. BPDU Filter prevents Bridge Protocol Data Units (BPDUs) from being sent or received on an interface where it is enabled. This can lead to scenarios where potential loops are not detected because switches may not recognize the topology changes caused by new devices being introduced. Therefore, caution is necessary because while BPDU Filter can be useful in specific circumstances to prevent unnecessary STP convergence, it can also compromise the network’s stability and redundancy. It should be carefully considered before deployment and used in scenarios where the network design already safeguards against loops, or when a definitive understanding of all devices in the network topology is present. By emphasizing caution, professionals understand that this setting isn't suitable for all situations. It is crucial to assess the network environment and ascertain whether the benefits of using BPDU Filter outweigh the risks. In situations where network stability and redundancy are paramount, relying on BPDU Filters liberally could pose a threat to the overall network configuration.