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  • Exam Name: ACA Database Certification
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ACA-Database Practice Exam Questions with Answers ACA Database Certification

Question # 6

Why is ApsaraDB for PolarDB better than other traditional database engines? (The number of answer: 3)

A.

When you purchase a PolarDB cluster, you don't need to specify the storage capacity you want to purchase

B.

PolarDB supports both OLTP and OLAP scenarios very well

C.

The PolarDB database engine won't require you to replicate data when adding read-only nodes

D.

ApsaraDB for PolarDB uses the pay-as-you-go billing method, therefore you only need to pay for the storage resources you actually use

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Question # 7

Which of the following specifications of AnalyticDB supports tiered storage of cold and hot data?

A.

Basic Edition

B.

C series

C.

S series

D.

Elastic Mode

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Question # 8

Which of the following are the advantages of cloud databases over self-managed databases? (Number of correct answers: 3)

A.

Stronger service level agreement (SLA)

B.

Integrated operations and maintenance (O&M), as well as easier management

C.

High availability and comprehensive backup and monitoring capabilities

D.

High costs

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Question # 9

Which of the following statements about AnalyticDB for MySQL is true?

A.

AnalyticDB for MySQL is a NoSQL database.

B.

AnalyticDB for MySQL can be used to build enterprise-grade data warehouse projects.

C.

AnalyticDB for MySQL can be used to build online transaction systems.

D.

AnalyticDB for MySQL supports transactions.

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Question # 10

If you have a development team with several developers working on cloud databases, which product is recommended to use for development collaboration?

A.

DMS

B.

DBS

C.

DTS

D.

DAS

E.

DG

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Question # 11

You need to migrate a database that has a storage capacity of 50 GB to the cloud and can tolerate a service downtime of half an hour. In this case, which of the following migration methods is the optimal choice to migrate data to the cloud in terms of stability and availability?

A.

Full backup and incremental backup

B.

Full backup only

C.

Logical migration tools

D.

Incremental backup only

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Question # 12

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?

A.

ECS-based Databases

B.

Express Connect DB

C.

RDS Instance

D.

ApsaraDB MongoDB

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