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Alibaba Database ACA Database Certification

ACA Database Certification

Last Update Jan 24, 2025
Total Questions : 80

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Questions 2

Your DTS (Data Transmission Service) migration has failed halfway through: what options do you

have? (Number of correct answers: 2)

Options:

A.  

Delete your DTS instance and start over

B.  

Restart the migration task from the console

C.  

Your database can't be migrated: you need to abandon the migration

D.  

You need to switch to ADAM, as DTS cannot complete the migration

Discussion 0
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Questions 3

Which of the following databases are supported by DTS (Database Transmission Service)? (Number

of correct answers: 3)

Options:

A.  

MySQL

B.  

SQL Server

C.  

PostreSQL

D.  

DB2

Discussion 0
Questions 4

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 0
Questions 5

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 0

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