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Exam 300-620 topic 1 question 86 discussion

Actual exam question from Cisco's 300-620
Question #: 86
Topic #: 1
[All 300-620 Questions]

An organization has encountered many STP-related issues in the past due to failed hardware components. They are in the process of long-term migration to a newly deployed ACI fabric. Senior engineers are worried that spanning-tree loops in the existing network may be extended to the ACI fabric. Which feature must be enabled on the ACI leaf ports to protect the fabric from spanning-tree loops?

  • A. BPDU Guard
  • B. per-VLAN MCP
  • C. Storm Control
  • D. BPDU Filter
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Suggested Answer: B 🗳️
by imanus at May 16, 2023, 10:55 a.m.

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udo2020
1 month, 1 week ago
Selected Answer: A
BPDU Guard is a feature that protects the ACI fabric from potential spanning-tree loops by disabling ports that receive BPDUs. When enabled on the ACI leaf ports, BPDU Guard shuts down the port immediately if it detects BPDUs, preventing spanning-tree issues from propagating into the ACI fabric. This is especially critical during migration scenarios where legacy networks using Spanning Tree Protocol (STP) are connected to the ACI fabric, as it ensures the integrity of the ACI environment by isolating potential STP-related problems.
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Marinheiro
8 months, 2 weeks ago
Selected Answer: B
The ACI Fabric does not participate in spanning tree protocol (STP) but instead acts as hub with respect to STP. https://unofficialaciguide.com/2018/03/27/using-mcp-miscabling-protocol-for-aci/#:~:text=MCP%20supports%20256%20VLANs%20per,from%20APIC%20version%203.2%20onward.)
upvoted 1 times
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imanus
1 year, 8 months ago
Selected Answer: B
i think the key is failed hardware components - MCP controls that
upvoted 2 times
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