Most Recent Alibaba ACA-Operator Exam Dumps

Prepare for the Alibaba ACA System Operator Certification exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Alibaba ACA-Operator exam and achieve success.

The questions for ACA-Operator were last updated on Apr 22, 2026.

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Question No. 1

In order to deal with sudden spikes in traffic, Company A uses Alibaba Cloud

Auto Scaling to set up an alarm trigger task (growing the Scaling Group when

the average memory utilization on ECS instances exceeds 80%). During the

test, it was found that the alarm task was not executed successfully. Which of

these could be possible causes? (Number of correct answers: 3)

AThe ECS instances in the Scaling Group have not yet installed the CloudMonitor monitoring agent

BBefore triggering the alarm task, the number of instances in the group has reached the maximum number of instances allowed (MaxSize)

CThe instance types chosen in the Scaling Configuration are out-of-stock in the Alibaba Cloud Region where the Scaling Group is located

DThe number of instances in the current group exceeds the ''expected number of instances'' for the Scaling Group

Show Answer

Correct Answer: A, B, C

https://www.alibabacloud.com/help/doc-detail/74853.htm

Question No. 2

In Alibaba Cloud, a developer finds that the ECS instance he created does not

have public IP assigned. The API method used was ''CreateInstance''. Which

of the following is the most likely reason?

AThe developer did not call AllocatePublicIpAdress (an additional API call), which is needed to assign a public IP

BThe CreateSecurityGroup API call was not made

CThe CreateDisk API call was not made

DThe ECS was not restarted after being created

Show Answer

Correct Answer: A

https://www.alibabacloud.com/help/doc-detail/25544.htm

Question No. 3

Which Alibaba Cloud service is used to manage cloud computing resources including the deployment?

AOperation Orchestration Service (OOS)

BMaintenance Orchestration Service (MOS)

CResource Orchestration Service (ROS)

DResource Access Management (RAM)

Show Answer

Correct Answer: C

https://www.alibabacloud.com/help/doc-detail/28852.htm

Question No. 4

Which of the following descriptions of the principles of Alibaba Cloud SSL certificate private key protection is correct?

AAlibaba Cloud uses the built-in functionality of the SSL certificate service to encrypt and store the private key to ensure the security of your certificate's private key

BThe plaintext of Alibaba Cloud's private key is usually stored on disk and backed up regularly

CAlibaba Cloud Certificate Service uses symmetric encryption to save the certificate private key.

DAlibaba Cloud Certificate Service keys are loaded into memory in plaintext format ONLY when needed.

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Correct Answer: D

Question No. 5

Serverless Workflow allow you to orchestrate distributed tasks in sequence, branch, and parallel modes, and ensure that tasks are reliably coordinated according to your workflow logic. Which of the following service integration modes is not supported by Serverless Workflow?

ARequest response mode

BSynchronization mode

CAsynchronous mode

DWaiting for callback mode

Show Answer

Correct Answer: C

Asynchronous mode is only possible with the combination of MNS service. https://static-aliyun-doc.oss-cnhangzhou.aliyuncs.com/download%2Fpdf%2F122479%2FBest_Practices_intl _en-US.pdf

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