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Exam 400-007 topic 1 question 18 discussion

Actual exam question from Cisco's 400-007

Question #: 18
Topic #: 1

An architect designs a multi-controller network architecture with these requirements:
* Achieve fast failover to control traffic when controllers fail.
* Yield a short distance and high resiliency in the connection between the switches and the controller.
* Reduce connectivity loss and enable smart recovery to improve the SDN survivability.
* Improve connectivity by adding path diversity and capacity awareness for controllers.
Which control plane component of the multi-controller must be built to meet the requirements?

A. control node reliability
B. control path reliability
C. controller state consistency
D. controller clustering

Show Suggested Answer

Suggested Answer: B 🗳️

by gohor at Jan. 29, 2023, 12:49 p.m.

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pizdecvsemu

Highly Voted 2 years, 4 months ago

Selected Answer: B

B. https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=8314783 Page 9 and 10, 3) SURVIVOR

upvoted 6 times

XalaGyan

1 year, 6 months ago

i agree that SURVIVOR meets most of the given keywords and hints. Answer B seems correct to me too

upvoted 1 times

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ba7a09d

Most Recent 7 months ago

Selected Answer: B

Its about connectivity/communication between devices, so path resiliency

upvoted 1 times

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Redrum702

11 months, 4 weeks ago

My revised answer is B: disregard my previous answer of D.

upvoted 1 times

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Redrum702

12 months ago

Answer is D: Controller Clustering - involves grouping multiple SDN controllers to work together as a single logical unit. This approach enhances the reliability, scalability, and fault tolerance of the network control plane.

upvoted 1 times

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walkwolf3

1 year, 7 months ago

Selected Answer: B

The answer is between controller path and node, controller path reliability is a better option.

upvoted 1 times

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exmjame

1 year, 12 months ago

C. Look at the "FIGURE 7. The multi-controller consistency solutions" in this ieee reference doco - https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=8314783

upvoted 2 times

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gcpengineer

2 years, 4 months ago

why not B

upvoted 1 times

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gohor

2 years, 5 months ago

C should be the correct answer

upvoted 2 times

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