Alibaba Exam ACA-Database Topic 8 Question 71 Discussion

Actual exam question for Alibaba's ACA-Database exam

Question #: 71
Topic #: 8

PolarDB for MySQL uses shared distributed storage and supports dual-zone deployment by default. How many data replicas are available across the two zones?

Show Suggested Answer

Suggested Answer: B

DTS is a data migration, integration, synchronization and change tracking tool.

https://www.alibabacloud.com/help/doc-detail/176063.htm?spm=a2c63.l28256.b99.6.490d7142CiFvPb

by Marla at Sep 18, 2024, 08:39 PM

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Caprice

4 days ago

Hmm, this sounds like a trick question. I'm going to go with 'C' just to be safe.

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Willow

9 days ago

That's a good point, Asha. Maybe having more replicas with option B) 4 would indeed be more beneficial for dual-zone deployment.

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Asha

10 days ago

I disagree, I believe the answer is B) 4. Having more replicas across two zones would provide better fault tolerance.

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Willow

13 days ago

I think the answer is A) 3 because it makes sense to have an odd number of data replicas for redundancy.

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