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Free ACA-Developer Exam Braindumps
ACA Developer Exam Questions 1–5 (page: 2)

Updated On: 9-Feb-2026
Page 2 of 20
PDF with 95 Questions

In order to have your applications interact with Alibaba Cloud RabbitMQ, you need to create related MQ resources first. Which of the following resources must be created? (Number of correct answers: 3)

  1. Vhost
  2. Exchange
  3. Queue
  4. Broker
  5. Topic

Answer(s): B,C,E



During the process of backing up an RDS database, a developer found that the backup failed. What might cause this to happen?

  1. The database instance is not stopped
  2. DDL operations were performed during the backup
  3. DML operations were performed during the backup
  4. DCL operations were performed during the backup

Answer(s): C



Which of the following descriptions describes the (Security Token Service) STS service correctly? (Number of correct answers: 3)

  1. Through the STS service, RAM users or RAM roles can obtain a temporary token that allows them to call the Alibaba Cloud API or use the web console
  2. A STS request consists of an access address, communication protocol, request method, request parameters and character encoding
  3. When calling the STS API, in order to ensure the safe calling of the API, Alibaba Cloud will authenticate each API request through a signature when each API call is made
  4. The STS service supports the use of both HTTP and HTTPS protocols

Answer(s): B,C,D



When a developer calls the Alibaba Cloud SDK to access Elastic Compute Service (ECS), the following error is returned; RealNameAuthenticationError What is the possible cause?

  1. The ECS instance name violates the ECS service's naming conventions.
  2. The ECS instance name conflicts with other instance names.
  3. The user's Alibaba Cloud account has not passed real name authentication
  4. The API callers account and password are not authorized for ECS access.

Answer(s): D



Serverless Workflow allows 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?

  1. Request response mode
  2. Synchronization mode
  3. Asynchronous mode
  4. Waiting for callback mode

Answer(s): B



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