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Exam 300-610 topic 1 question 18 discussion

Actual exam question from Cisco's 300-610
Question #: 18
Topic #: 1
[All 300-610 Questions]

What are two reasons to select OTV as the DCI solution to connect multisite topologies? (Choose two.)

  • A. It propagates hosts reachability without support of traffic flooding.
  • B. Layer 3 failures do not propagate beyond the OTV edge device.
  • C. It extends the spanning tree between data centers.
  • D. It is an open standard.
  • E. It constrains HSRP hello messages to each data center.
Show Suggested Answer Hide Answer
Suggested Answer: AE 🗳️
by CHEdot at Aug. 27, 2020, 11:52 a.m.

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CHEdot
Highly Voted 4 years, 9 months ago
Probably A&B. C is wrong. OTV do not extend spanning-tree. See "Where Is My Spanning-Tree Root with OTV?" on page 5 https://www.cisco.com/c/dam/en/us/products/collateral/switches/nexus-7000-series-switches/guide_c07-728315.pdf
upvoted 17 times
Magneto
3 years, 9 months ago
Correct
upvoted 1 times
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FonT
Highly Voted 4 years, 1 month ago
I think A E https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Data_Center/DCI/whitepaper/DCI3_OTV_Intro/DCI_1.html OTV introduces the concept of “MAC routing,” […] it is justified by the need to limit flooding of Layer 2 traffic across the transport infrastructure. The last capability introduced by OTV is to filter First Hop Redundancy Protocol (FHRP—HSRP, VRRP, and so on) messages across the logical overlay.
upvoted 10 times
Luc1f3R
3 years, 9 months ago
Why is this one not upvoted much? https://community.cisco.com/t5/data-center-documents/cisco-otv-and-fhrp-isolation/ta-p/3136485
upvoted 1 times
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CoAsT_x
Most Recent 5 months, 1 week ago
Selected Answer: AE
I definitely believe A and E as well. If you read the link in the reference whitepaper in the suggested answer above, you can literally find A. E. stated in there.
upvoted 2 times
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Wasamela
11 months, 2 weeks ago
Selected Answer: BE
My bad, B&E
upvoted 1 times
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Wasamela
11 months, 2 weeks ago
Selected Answer: AE
A&E are correct.
upvoted 2 times
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mojzucha
3 years, 7 months ago
A and E are the options of your choice
upvoted 5 times
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LionNS
4 years, 7 months ago
In the URL provided as reference says: "This is achieved by leveraging the same control plane protocol used for the exchange of MAC address information, without the need of extending the Spanning-Tree Protocol (STP) across the overlay". So as CHEdot commented, C is incorrect.
upvoted 2 times
LionNS
4 years, 7 months ago
I believe B and E are correct. I chose E because "The last capability introduced by OTV is to filter First Hop Redundancy Protocol (FHRP—HSRP, VRRP, and so on) messages across the logical overlay."
upvoted 3 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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