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  3. ACA-Operator

Alibaba ACA-Operator Exam (page: 1)
Alibaba ACA System Operator Certification
Updated on: 31-Mar-2026

Viewing Page 1 of 14
ACA-Operator PDF 62 Questions

Which command is used to get the Docker daemon information?

  1. docker info
  2. docker version
  3. docker pull
  4. docker image

Answer(s): A


Reference:

https://docs.docker.com/engine/reference/commandline/info/



When you use SQL statements to access tables in a database without an index configured, a full table scan will be performed. If a table contains a large amount of data, this kind of scan will access a large amount of data and consume a lot of the database's resources. Which of the following options are best practices when creating database indexes? (Number of correct answers: 3)

  1. Add an index to a field that is frequently queried but does not frequently perform add, delete, or modify operations.
  2. Applies indices to fields to contain many records.
  3. A table should not contaiiAiore than 6 indexed fields.
  4. Apply indexing to fields of fixed length (preferably not long fields).
  5. Adhere to the rightmost prefix principle when using composite indexes

Answer(s): A,C,D



Which of the following steps is NOT mandatory when creating an API through Alibaba Cloud API Gateway?

  1. Define basic API information
  2. Attach a domain name
  3. Define API Request parameters
  4. Define the API backend service

Answer(s): B


Reference:

https://www.alibabacloud.com/help/doc-detail/29478.htm



Which of the following statements about ECS Snapshot is NOT correct?

  1. You can manually create snapshots
  2. You can create automatic snapshots
  3. You can roll back a disk by using a snapshot
  4. You can create an ECS instance from a snapshot

Answer(s): D

Explanation:

You can create a custom image from a snapshot that contains the operating system and data of an ECS instance. Then, you can use the custom image to create multiple instances that have identical application environments.


Reference:

https://www.alibabacloud.com/help/doc-detail/25391.htm



Your company decided to replicate the whole cloud environment in another region and use it as a cross-region failover in disaster recovery scenarios.

Your current environment includes Elastic Compute Service (ECS) instances,
Server Load Balancer (SLB) instances and Relational Database Service (RDS) instances. Which of the following statements is correct?

  1. You can provision multiple ECS instances in multiple regions, thereby leveraging automatic high availability across regions
  2. You can provision multiple SLB instances in multiple regions, thereby leveraging automatic high availability across regions
  3. You can use DNS to resolve domain names to the IP addresses of multiple ECS instances running in different regions
  4. You can use DNS to resolve domain names to the IP addresses of multiple SLB instances running in different regions

Answer(s): D


Reference:

https://cloudacademy.com/course/alibaba-server-load-balancer-1066/alibabas-high- availability/



Viewing Page 1 of 14



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