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Exam 400-007 topic 1 question 193 discussion

Actual exam question from Cisco's 400-007
Question #: 193
Topic #: 1
[All 400-007 Questions]

The administrator of a small branch office wants to implement the Layer 2 network without running STP. The office has some redundant paths. Which mechanism can the administrator use to allow redundancy without creating Layer 2 loops?

  • A. Use two port channels as Flex links
  • B. Use double-sided VPC on both switches
  • C. Use fabric path with ECMP
  • D. Use 802.3ad link bundling
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Suggested Answer: A 🗳️

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Nick_Nick_123456
1 year, 1 month ago
Selected Answer: A
In theory all answers can accomplish redundancy while eliminating the necessity of STP. This is a small branch office thus B,C do not apply. Answer D can be applied but it is overlapped by answer A which would be the optimal one for a branch without STP.
upvoted 1 times
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Akkisingh
1 year, 6 months ago
Selected Answer: A
Flex links are a pair of a Layer 2 interfaces (switch ports or port channels) where one interface is configured to act as a backup to the other
upvoted 1 times
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gcpengineer
1 year, 8 months ago
Selected Answer: A
It allows for the automatic failover of traffic from a primary link to a backup link in the event of a link failure, without the need for the Spanning Tree Protocol (STP).
upvoted 2 times
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Arsenal16
1 year, 8 months ago
Selected Answer: A
A, correct as per https://community.cisco.com/t5/networking-blogs/flexlink-in-cisco-layer-2-network/ba-p/3106779
upvoted 4 times
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ying162
1 year, 9 months ago
Selected Answer: D
I vote for D
upvoted 3 times
alexao2983
1 year, 7 months ago
Link bundling could cause Layer 2 Loop
upvoted 1 times
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blurain
9 months, 1 week ago
fyi, the switch will disable STP on flex links
upvoted 1 times
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C (25%)
B (20%)
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