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Alibaba ACA-Cloud1 Exam - Topic 6 Question 97 Discussion

Actual exam question for Alibaba's ACA-Cloud1 exam
Question #: 97
Topic #: 6
[All ACA-Cloud1 Questions]

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies. It supports adding an existing ECS instance into the scaling group but imposes certain requirements on instance region. In this case, which of the following statements is true?

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Suggested Answer: A

Auto Scaling is a management service that can automatically adjust elastic computing resources based on your business needs and policies.It can help you cope with traffic spikes, reduce costs, and improve service availability1.Auto Scaling supports adding an existing ECS instance into the scaling group, which is a collection of ECS instances that share the same scaling configuration and scaling rules2.However, the existing ECS instance must meet certain requirements, one of which is that the instance and the scaling group must be in the same region3. A region is a physical location where Alibaba Cloud deploys its data centers.Each region consists of multiple isolated zones that have independent power grids and networks4. Therefore, the instance and the scaling group do not have to be in the same zone, as long as they are in the same region.


by Edelmira at Jan 22, 2026, 01:25 PM

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Tresa
3 days ago
I bet the exam question writer is just trying to trick us. Auto Scaling is easy, right?
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Lavonna
8 days ago
Wait, so the instance region has to match the scaling group's region? That's good to know.
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Sarah
13 days ago
I thought Auto Scaling was for adjusting resources, not for adding instances. Hmm, interesting.
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Irma
19 days ago
The instance region can be different from the scaling group's region.
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Tony
24 days ago
The instance region must match the scaling group's region.
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Billye
29 days ago
I feel like I studied this, and it seems like the region requirement is a key point, but I’m not confident about the specifics for ECS instances.
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Melda
1 month ago
If I remember correctly, Auto Scaling can only add instances that are in the same region as the scaling group, but I might be mixing it up with EC2.
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Daisy
2 months ago
I think there was a practice question about scaling groups that mentioned region compatibility, but I can't recall the exact details.
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Dino
2 months ago
I remember something about Auto Scaling needing instances in the same region, but I'm not entirely sure if it applies to ECS specifically.
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Lynsey
2 months ago
Ah, I'm a bit fuzzy on the details here. I'll need to carefully read through the question and think it through step-by-step.
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Matt
2 months ago
Ah, this is a good one. I remember learning about the regional requirements for Auto Scaling in the course material. I should be able to work through this.
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Sabina
3 months ago
Okay, I think I know the answer to this. The key is understanding the regional constraints for Auto Scaling. Let me jot down my thoughts.
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Pok
3 months ago
Hmm, I'm a bit unsure about the specific requirements for adding an existing ECS instance to an Auto Scaling group. I'll need to double-check the documentation.
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Glenna
3 months ago
This seems like a straightforward question about Auto Scaling requirements. I'll need to review the details on instance region compatibility.
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