Alibaba Cloud ACA Developer Certification ACA-Developer Exam Dumps: Updated Questions & Answers (October 2025)

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.

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.

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.

Manually delete them one by one

Configure a life cycle rule that matches the entire bucket, and delete all files after one day

Call the API from a script, deleting files in batches

Directly delete the bucket

HTTP(S)

TCP/UDP

DNS

SNMP

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.

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 .

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.

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

Applications requiring high OPS, such as logging apps

Scenarios where complex transaction support is required

Applications where JSON is a good choice of storage format

Applications requiring geo-location queries, such as logistics or order status apps

A snapshot is a backup file of the cloud disk data state at a certain point in time. The first snapshot of the cloud disk is a full snapshot of the ac usage. Empty data blocks are not backed up. All subsequent snapshots are incremental snapshots, and only changed data blocks are stored.

Snapshots can be created manually through the web console or command line tools, or automatically according to a schedule.

In the event of a system failure, you can use a snapshot to roll back the Cloud Disk to an earlier point in time.

Snapshot rollbacks can be performed while the ECS instance is running.

3

4

5

6

Read and write traffic

Storage capacity

Index traffic after index configuration

Query analysis

Java

Swift

PHP

Python

Bash shell

Alibaba Cloud Tracing Analysis model relies on OpenTracing

In the OpenTracing standard, a call chain can be regarded as a directed acyclic graph (DAG) composed of multiple Spans. The relationship between spans is named References

In the OpenTracing standard, each Span represents a named and timed non-continuous execution segment in the call chain

In some cases, timing diagrams based on the timeline are used to show the call chain