ACA-DATABASE Online Practice Questions and Answers

Which of the following statements about Alibaba Cloud ApsaraDB for MongoDB is true?

A. It takes a longer time to perform operations and maintenance (OandM) on ApsaraDB for MongoDB instances than on self-installed and self-managed MongoDB.

B. DataWorks is not supported for MongoDB data processing.

C. Alibaba Cloud and MongoDB have a strategic partnership, so Alibaba Cloud Is able to provide the latest MongoDB features in our ApsaraDB for MongoDB product, in all our global regions.

Which of the following is not a relational database?

A. Oracle

B. DB2

C. Teradata

D. Redis

Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?

A. Makes it easy to do business anywhere.

B. Makes data secure and independently managed.

C. Makes large amounts of data easier to process.

D. Makes data accessible online and in real time.

Alibaba Cloud DTS (Data Transmission Service) is a file migration tool.

A. True

B. False

Which of the following scheduling tools are supported by AnalyticDB for MySQL? (Number of correct answers: 2)

A. DMS

B. Data Works

C. MaxCompute

D. QuickBl

Which of the following features is NOT supported by Data Transmission Service (DTS)?

A. Data migration

B. Data synchronization

C. Data backup

D. Change tracking

What does DIM mean in data warehouse terms?

A. Dimension table

B. Operational data store (ODS)

C. Common data model (CDM)

D. Application data service (ADS)

What is the maximum number of read-only nodes in a PolarDB cluster?

A. 1

B. 5

C. 10

D. 15

DTS (Data Transmission Service) must have access to a database user account on both the target and source database, in order to work.

A. True

B. False

PolarDB for MySQL allows you to deploy a cluster across multiple zones. Compared with single-zone clusters, multi-zone clusters have better disaster recovery capabilities and can withstand data centre-level faults.

A. True

B. False