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Exam 300-620 topic 1 question 32 discussion

Actual exam question from Cisco's 300-620
Question #: 32
Topic #: 1
[All 300-620 Questions]

An engineer is extending EPG connectivity to an external network. The external network houses the Layer 3 gateway and other end hosts. Which ACI bridge domain configuration should be used?

  • A. Forwarding: Custom L2 Unknown Unicast: Hardware Proxy L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Enabled
  • B. Forwarding: Custom L2 Unknown Unicast: Flood L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Enabled
  • C. Forwarding: Custom L2 Unknown Unicast: Hardware Proxy L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Disabled
  • D. Forwarding: Custom L2 Unknown Unicast: Flood L3 Unknown Multicast Flooding: Flood Multi Destination Flooding: Flood in BD ARP Flooding: Disabled
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Suggested Answer: B 🗳️
by thiyagas at Jan. 15, 2021, 1:35 p.m.

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Highly Voted 4 years, 5 months ago
Correct Answer : B. https://aci-lab.ciscolive.com/lab/pod9/tenants/create-l2-bd
upvoted 16 times
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nabilzay
Highly Voted 4 years, 3 months ago
Should be B, you need ARP flood to be able to communicate correctly with the external L2 domain
upvoted 7 times
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designated
Most Recent 7 months, 1 week ago
Selected Answer: B
Due to this specific configurations are required to achieve the goal of connecting the two separate domains. There are two unique characteristics that have to be configured in a bridge domain so that it will work properly. ARP Flooding: This parameters forces the ACI fabric to flood to all ports in the same Layer2 domain any ARP requests that are received. In this way any broadcast ARP requests that arrive from an external Layer 2 are forwarded to all endpoints in the same layer 2 domain or to the exterior from inside the ACI fabric Unknown unicast forwarding: This parameter also changes the behavior of the ACI fabric to flood any unknown unicast entries to the ports of the same layer 2 domain.
upvoted 1 times
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sailorsoul
1 year, 5 months ago
Selected Answer: B
B is correct.
upvoted 1 times
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Gab99
2 years, 8 months ago
Selected Answer: B
i feel B also
upvoted 1 times
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patopizarro
3 years, 2 months ago
Selected Answer: B
Correct Answer : B. Flood in BD ARP Flooding: Enabled
upvoted 5 times
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polle
3 years, 6 months ago
Should be B
upvoted 2 times
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thiyagas
4 years, 5 months ago
shouldn't this be B..?
upvoted 6 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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