ACA-Developer Alibaba Cloud ACA Developer Certification exact Exam Questions

ACA Developer Certification

Last Update 21 hours ago Total Questions : 95

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Question # 4

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

Windows

Linux

macOS

Android

Question # 5

Which of these are suitable use cases for Alibaba Cloud's ApsaraDB for Redis service? (Number of correct answers: 3)

Online gaming user rankings (scoreboard)

E-Commerce sales & promotions

Live video chat system

Enterprise OA system

Question # 6

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

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

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

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

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

Question # 7

Which of the following are correct, regarding RAM users? (Number of correct answers: 3)

RAM users can be created under a single Alibaba Cloud account, corresponding to employees, systems, or applications.

RAM users do not "own" the resources that they create (those belong to the Alibaba Cloud account itself), and RAM users cannot generate and pay their own individual bills (costs accrue to and are billed to the master Alibaba Cloud account).

RAM users belong to an Alibaba Cloud account, but they can also operate as independent accounts with their own private resources, not visible to the primary Alibaba Cloud account.

RAM users must be authorized by the Alibaba Cloud account to log in to the console or use the API to manage the resources owned by the Alibaba Cloud account.

Question # 8

In Alibaba Cloud RocketMQ, messages are kept for up to _____ days. We recommend configuring a monitoring service to watch the consumption status, and intervene manually when ''not consumed but to be deleted'' message alarms occur.

Question # 9

When a developer uses the LogGroup function to package multiple logs and writes data through the API/SDK of the Log Service, it receives error code 403 or 500 continiously. What are the possible reasons?

The "Topic" data field is empty

The log size written to log group is less than 5MB

The target partition in the Logstore is not specified

Insufficient space in the Logstore partition

Question # 10

Alibaba Cloud's ECS disk snapshotting tool can create crash-consistent snapshots for all types of Cloud Disks. It is a convenient and efficient disaster recovery method. It is often used for data backup, custom mirroring, application disaster recovery, etc. Which of the following is NOT a correct description of disk snapshots?

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.