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Alibaba ACA-Cloud1 Exam - Topic 8 Question 102 Discussion

Actual exam question for Alibaba's ACA-Cloud1 exam

Question #: 102
Topic #: 8

[All ACA-Cloud1 Questions]

Which of the following scenarios is applicable to use RDS read-only instances?

AReduces the write pressure on the RDS primary instance.

BReduces the read pressure on the RDS primary instance.

CImplements data backtracking for the last two days.

DImproves RDS storage capabilities.

Show Suggested Answer

Suggested Answer: B

ApsaraDB RDS for MySQL is a cloud-based relational database service that provides secure, cost-effective, and scalable database solutions for various applications. RDS for MySQL supports creating read-only instances that are synchronized with the primary instance in real time. Read-only instances can handle read requests from applications and reduce the read pressure on the primary instance. This can improve the performance and availability of the database system. Read-only instances can also be used for scenarios such as report analysis, data backup, and disaster recovery.

Overview of read-only ApsaraDB RDS for MySQL instances

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Alibaba Cloud Computing Exam Question 2022

by Denise at May 14, 2026, 08:35 AM

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Shaniqua

2 days ago

Overall, B is the clear answer. It’s all about balancing load.

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Delsie

7 days ago

D doesn’t apply here. RDS storage isn’t improved by read-only instances.

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Emily

12 days ago

I feel like C is a distraction. Not really about read-only instances.

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Yoko

18 days ago

A could be relevant too, but B is more direct.

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Lanie

23 days ago

Agreed! B makes sense for scaling reads.

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An

28 days ago

I think B is the best choice. It really helps with read pressure.

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Alfred

1 month ago

I think A and B are the main reasons for using read replicas.

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Izetta

1 month ago

D is definitely not correct, just for reads!

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Janae

1 month ago

Wait, C is a thing? I thought RDS didn't do backtracking.

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Dahlia

2 months ago

Totally agree, B is spot on too!

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Lavonna

2 months ago

A) Reduces the write pressure on the RDS primary instance.

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Cherrie

2 months ago

I thought read replicas were just for scaling reads!

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Lanie

2 months ago

D doesn't make sense, it's not about storage.

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Marget

2 months ago

Wait, can RDS really do data backtracking?

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Ilona

2 months ago

Totally agree, they help with read pressure.

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Lettie

3 months ago

A and B are spot on!

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Cammy

3 months ago

I’m confused about the options. I thought read-only instances were just for scaling reads, but I can see how A might apply too.

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Charlesetta

3 months ago

I practiced a similar question, and I believe the main purpose of read-only instances is to offload reads, so B seems right to me.

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Coletta

3 months ago

I’m not entirely sure, but I remember something about read replicas helping with write pressure too. Maybe A is also relevant?

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Kattie

5 months ago

I think read-only instances are mainly about reducing the read pressure on the primary instance, so I’d go with B.

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