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Alibaba Cloud Updated ACA-Database Exam Questions and Answers by duaa

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Alibaba Cloud ACA-Database Exam Overview :

Exam Name: ACA Database Certification
Exam Code: ACA-Database Dumps
Vendor: Alibaba Cloud Certification: Alibaba Database
Questions: 80 Q&A's Shared By: duaa
Question 8

Which of the following statements is NOT correct about the benefits you can gain through PolarDB?

Options:

A.

Large storage space

B.

Elastic scaling within minutes

C.

When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources

D.

Millisecond-level latency in physical replication

E.

locked backup

Discussion
Question 9

You are using DTS to migrate from a MySQL database installed on an ECS instance to a target

database on RDS. In the DTS console, which of these is the correct "Instance Type" for the database?

Options:

A.

ECS-based Databases

B.

Express Connect DB

C.

RDS Instance

D.

ApsaraDB MongoDB

Discussion
Question 10

Which migration modes are supported by DTS (Data Transmission Service)? (Number of correct

answer: 3)

Options:

A.

From Alibaba Cloud RDS to other database systems

B.

From RDS to an ECS-based database

C.

From a different cloud provider to Alibaba Cloud

D.

From an RDS database, back to itself

Discussion
Question 11

Which of the following statements is NOT correct about PolarDB?

Options:

A.

ApsaraDB for PolarDB is a cloud-native relational database service that is compatible with the MySQL, PostgreSQL, and Oracle engines

B.

Each ApsaraDB for PolarDB cluster supports up to 100 TB of storage space and can handle up to one million queries per second (QPS)

C.

ApsaraDB for PolarDB can scale clusters within a few minutes, recover from failures within a few seconds, and guarantee data consistency

D.

An ApsaraDB for PolarDB cluster can also be scaled out to a maximum of 16 nodes, and provide up to 6 times of performance improvement traditional MySQL clusters at a 30% to 50% cost reduction

E.

ApsaraDB for PolarDB is designed to handle large amounts of sequential queries

Discussion
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2025-10-03
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