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ACA-Developer Exam Dumps : ACA Developer Certification

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ACA Developer Certification Questions and Answers

Question 1

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

Options:

A.

The database instance is not stopped

B.

DDL operations were performed during the backup

C.

DML operations were performed during the backup

D.

DCL operations were performed during the backup

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Question 2

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

Options:

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.

Question 3

You can create an event notification rule in Message Service and push notifications to the specified consumer in the form of messages, to receive events from specified Alibaba Cloud resources. Which of the following options are correct statements about the Message Service (MS) service? (Number of correct answers: 2)

Options:

A.

Event Notifications can cross regions.

B.

Message Service provides synchronous notifications to ensure the consistency between the message acknowledgment and event processing.

C.

The event notification message is retained within the valid time. When you fail to receive an event message, the event notification message is retried based on the specified retry policy.

D.

The consumer type of the event notification message can be HTTP Server, Queue, or Topic.