Alibaba ACA-Database Exam - 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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Celestina

6 months ago

I thought it was 4 too, but I could be wrong.

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Clement

7 months ago

Definitely 6 replicas across the zones!

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Gladis

7 months ago

Wait, are there really 5 replicas? That seems high.

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Antonio

7 months ago

I think it's actually 4!

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Alberto

7 months ago

Pretty sure it's 3 replicas.

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Kiley

8 months ago

I recall reading that there are usually 3 replicas for redundancy, but I could be mixing it up with another database system.

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Tamekia

8 months ago

I’m a bit confused about the dual-zone deployment. Does that mean the replicas are split evenly, or is there a different total?

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Nilsa

8 months ago

I practiced a similar question about data replication in distributed systems, and I feel like 4 replicas might be the right answer.

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Alison

8 months ago

I think I remember that PolarDB has a specific number of replicas for high availability, but I’m not sure if it’s 3 or 4.

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Ardella

8 months ago

I'm not entirely sure about this one. I know PolarDB has some high availability features, but I'm not familiar with the specifics of the dual-zone deployment. I'll have to make an educated guess.

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Elliott

8 months ago

Okay, I've got this. PolarDB uses shared distributed storage, and dual-zone deployment is the default. So the number of data replicas must be 4, one in each zone.

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Coral

8 months ago

I'm a bit confused by the wording of this question. Let me re-read it carefully and see if I can figure out the right answer.

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Kati

8 months ago

Hmm, this seems like a straightforward question about PolarDB's data replication. I'll need to think through the details of how dual-zone deployment works.

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Ben

8 months ago

Ah, I remember learning about this in the PolarDB documentation. The default is 3 data replicas across the two zones. I'm confident that's the right answer.

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Carmelina

8 months ago

I'm a bit confused by the wording of this question. I know the Lean principles well, but I want to make sure I fully understand what they're asking before I select an answer.

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Gabriele

1 year ago

Ha! I bet the answer is 'D' just to throw us off. PolarDB is probably feeling a bit 'polar' today, with all those extra data replicas.

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Billy

12 months ago

User 3: I agree with Billy, 'B' sounds right.

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Cherelle

1 year ago

I'm going with 'A', not 'D'.

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Levi

1 year ago

User 2: No way, I'm going with 'B'.

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Candra

1 year ago

I'm pretty sure it's 'B', not 'D'.

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Noemi

1 year ago

I think it's actually 'C', not 'D'.

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Rickie

1 year ago

User 1: I think the answer is 'A'.

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Lacresha

1 year ago

Wait, is this a trick question? I thought PolarDB was all about simplicity and efficiency. Maybe the answer is 'B' for a nice, even number of replicas.

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