Alibaba Cloud ACA-DATABASE Online Practice Questions and Exam Preparation

Alibaba Cloud ACA-DATABASE Online Questions & Answers

• Question 11:

  Which of the following computing capabilities are supported by AnalyticDB? (Number of correct answers: 4)

  A. Complex extract, transform, load (ETL)
  B. Interactive analysis
  C. Simple point query
  D. Real-time update
  E. Machine Learning
  A. Complex extract, transform, load (ETL)
  B. Interactive analysis
  D. Real-time update
  E. Machine Learning

• Question 12:

  Which of the following are the benefits of database views? (Number of correct answers: 3)

  A. Simplicity for queries
  B. Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users
  C. Easier for data visualization
  D. Stabilization of information: presents a consistent, unchanged image of the database structure
  A. Simplicity for queries
  B. Simplicity in structure: presents the database as a set of virtual tables specific to particular users or groups of users
  D. Stabilization of information: presents a consistent, unchanged image of the database structure

• Question 13:

  Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.

  A. True
  B. False
  B. False

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  Explanation/Reference:

  PolarDB cluster supports Manually and Automatically switch over services between primary and read-only nodes. https://www.alibabacloud.com/help/doc- detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0

• Question 14:

  Which of the following architectures are supported by ApsaraDB for Redis Enhanced Edition (Tair)? (Number of correct answers: 3) A. Master-replica architecture in which standard master-replica instances are deployed

  B. Read/write splitting architecture in which standard master-replica instances are deployed
  C. Cluster master-replica instances
  D. Single-node architecture
  B. Read/write splitting architecture in which standard master-replica instances are deployed
  C. Cluster master-replica instances

• Question 15:

  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
  A. DMS

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  Explanation/Reference:

  A series of step-based solutions for RandD processes, data security, and data development are provided in the Data Management (DMS) console to get you started with DMS. https://www.alibabacloud.com/help/docdetail/190124.htm?spm=a2c63.p38356.b99.40.6ad93d19Xe9h14

• Question 16:

  Which of the following are relational databases? (Number of correct answers: 5)

  A. Oracle
  B. MySQL
  C. PostgreSQL
  D. MongoDB
  E. MariaDB
  F. Redis
  G. TSDB
  H. HBase
  I. SQL Server
  A. Oracle
  B. MySQL
  C. PostgreSQL
  E. MariaDB
  I. SQL Server

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  Explanation/Reference:

• Question 17:

  Which of the following are NOT true, regarding DTS (Data Transmission Service)? (Number of correct answers: 2)

  A. The source and destination database must use the same database engine
  B. The source and destination database must both have a database user which DTS can use
  C. If the source database is not on Alibaba Cloud, it must be Internet accessible so that DTS can connect to it
  D. DTS is designed for file synchronization
  A. The source and destination database must use the same database engine
  D. DTS is designed for file synchronization

• Question 18:

  Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?

  A. FC Switch
  B. SAN
  C. Proxy
  D. RDMA
  B. SAN

• Question 19:

  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
  C. RDS Instance

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  Explanation/Reference:

  https://www.alibabacloud.com/help/doc- detail/96154.htm?spm=a2c63.p38356.b99.118.59de5d1aWUVErx

• Question 20:

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

  A. True
  B. False
  B. False

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  Explanation/Reference:

  DTS is a data migration, integration, synchronization and change tracking tool. https://www.alibabacloud.com/help/doc-detail/176063.htm?spm=a2c63.l28256.b99.6.490d7142CiFvPb