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ACA-Developer Alibaba Cloud ACA Developer Certification Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Alibaba Cloud ACA-Developer ACA Developer Certification certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 95 questions

Which of the following OSS tools are GUI-based? (Number of correct answers:2)

A.

Web Console

B.

ossf s

C.

ossbrowser

D.

ossutil

A game company is developing a game application for the Apple and Android platforms. Currently, this application stores user data (as flat files) securely on the local storage of a user's device. The game company wants to provide a new feature that allows customers to play the same game on different devices, which requires synchronizing user data between different devices. Which of the following cloud services supports this requirement without creating a new back-end application?

A.

Function Compute

B.

Object Storage Service (OSS)

C.

Table Store

D.

Log service

Which of the following cloud services can be integrated with Alibaba Cloud KMS (Key Managed Service)? (Number of correct answers: 3)

A.

Elastic Compute Service (ECS)

B.

Object Storage Service (OSS)

C.

Relational Database Service (RDS)

D.

Server Load Balancer (SLB)

Which of the following options is not included in Object Storage Service (OSS) object URLs?

A.

Region name

B.

Zone name

C.

Bucket name

D.

Filename

An Elastic Compute Service (ECS) instance (private IP only) needs to read data from a RDS MySQL database in another VPC through a private IP address, and at the same time, RDS's public internet endpoint needs to be available for requests from some internet clients. Which steps must be taken to allow applications to access this RDS instance via both interfaces? (Number of correct answers: 2)

A.

Make sure that the security group of the ECS instance allows outbound access to the MySQL service port.

B.

Add the private and public IP addresses of all applications to the RDS whitelist.

C.

Connect the two VPCs through CEN.

D.

Configure a NAT gateway for the VPC to which the ECS instance belongs.

On which operating systems can you install Alibaba Cloud command line tools? (Number of correct answers: 3)

A.

Windows

B.

Linux

C.

macOS

D.

Android

Alibaba Cloud Link Tracing Analysis supports call link reporting based on the Open Tracing standard. Which of the following client types does link tracing support? (Number of correct answers:3)

A.

Jaeger

B.

Zipkln

C.

Skywalklng

D.

Pinpoint

Which of the following descriptions of Alibaba Cloud's SSL certificate service are correct? (Number of correct answers: 2)

A.

Alibaba Cloud SSL Certificate Service supports the purchase of three types of certificates: DV certificates, OV certificates, and EV certificates.

B.

EV certificates are suitable for large enterprises, financial institutions, etc.

C.

OV certificates are suitable for personal websites.

D.

DV level certificates are suitable for government organizations, enterprises, educational institutions, etc.

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

A.

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

B.

A STS request consists of an access address, communication protocol, request method, request parameters and character encoding

C.

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

D.

The STS service supports the use of both HTTP and HTTPS protocols

Which data format is NOT supported by Alibaba Cloud Message Service?

A.

XML

B.

JSON

C.

SIMPLIFIED

D.

VERBOSE

Which of the following statements describes AKs (Access Keys) incorrectly?

A.

AK can refer to both the AccessKey ID and the AccessKey secret

B.

You can use AK to construct an API request and the corresponding resources can be manipulated if your request successfully..

C.

An AccessKey ID and AccessKey Secret cannot be used separately

D.

AccessKey Secrets for RAM sub-accounts can be queried at any time on the Console Interface after creation

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?

A.

Request response mode

B.

Synchronization mode

C.

Asynchronous mode

D.

Waiting for callback mode

Assume that a company uses ApsaraDB for PolarDB. The company commonly queries users based on their basic information, including: addresses, company names, and ID numbers. In this scenario, what is the best practice for creating a database index (or indexes)?

A.

Create a b-tree index on each column to be searched.

B.

Create a hash index on each column to be searched.

C.

Create a gin index for multiple fields.

D.

Create a gist index for multiple fields.

You have a Java application with source code stored on GitHub. Now you want to build a container image using this code, and store it on a Container Registry instance located in Mainland China. Which of the following is the simplest, lowest maintenance option?

A.

Download the Java code from GitHub to your laptop, build the Docker image using a local Dockerfile, and use docker push to upload It to Container Registry.

B.

Upload the Dockerfile to GitHub for version control, then download it together with the Java code to your local device, compile and pack container image, and upload the image to Alibaba Cloud Container Registry via docker push .

C.

Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Set u Jenkins environment to automate the process of building the container image and pushing it to your Container Registry instance.

D.

Associate your Alibaba Cloud Container Registry instance with your GitHub repository, and upload the Java code and Dockerfile to GitHub Th Container Registry's built-in build service, configuring a rule that will rebuild your container image whenever your GitHub code is updated

The event monitoring feature in CIoudMonitor provides custom event monitoring functions. Which of the following data reporting methods are included? (Number of correct answers: 3)

A.

Report event monitoring through the Python SDK

B.

Report event monitoring through the Java SDK

C.

Report event monitoring data via HTTP

D.

Report event monitoring data through the command line (CU)

Which of the following options are correct for Multipart Upload and Resumable Upload in Object Storage Service (OSS)? (Number of correct answers: 3)

A.

Use Multipart Upload to upload parts of a file in parallel to speed up the upload process

B.

Multipart Upload is usually used when the size of the file to be uploaded is large

C.

If the upload fails due to an accident during the uploading of fragments, you need to upload all the fragments again

D.

After an upload is interrupted, the portions of the file which have successfully uploaded prior to the interruption will be saved in the OSS bucket

Which of the following statements about PolarDB's endpoint(s) is NOT correct?

A.

The endpoint of the PolarDB MySQL database includes the cluster endpoint and the primary endpoint.

B.

Through a cluster endpoint, applications can connect to data nodes.

C.

The primary endpoint supports read/write splitting.

D.

Cluster endpoints support read/write splitting.

A developer runs a web application on a physical machine in an IDC. The machine is running Ubuntu Linux. Which of the following is the recommended method if he wants to migrate this web application onto an Alibaba Cloud ECS instance?

A.

Use a third-party image creation tool to create an image from the physical server. Upload the image to the ECS console to turn it into a custom image. Then, use the custom image to create ECS instances.

B.

Use SMC(Server Migration Center) to collect data from the origin physical server. Create an intermediate ECS instance on Alibaba Cloud and wait for the data transfer to complete. Then generate a new image directly from that intermediate ECS instance.

C.

Use a third-party image creation tool to create an image from the physical server. The image is then uploaded to Alibaba Cloud Object Storage Service (OSS) for storage. In the ECS console, import that image from OSS, then, create an ECS instance from the custom image.

By default, Function Compute creates an instance for each request Function compute allows you to create multiple instances concurrently to reduce costs and improve execution efficiency Which of the following scenarios is NOT suitable for enabling the feature of handling multiple requests on a single instance? (Number of correct answers: 2)

A.

The function has a shared state and cannot be accessed concurrently.

B.

Requests are waiting for responses from the downstream service for an extended period of time.

C.

A request consumes a large amount of CPU and memory resources.

D.

Functions processes independent data objects.

Which of the following database connection methods does ApsaraDB for Redis support? (Number of correct answers: 2)

A.

DMS (Data Management Service)

B.

aliyun-cll

C.

Redis-cIl

D.

Sentinel

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Total 95 questions
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