Alibaba Cloud ACA Database Certification - ACA-Database FREE EXAM DUMPS QUESTIONS & ANSWERS]

Question 1

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

A. Elastic scaling within minutes B. Millisecond-level latency in physical replication C. When you add a read-only node in an ApsaraDB for PolarDB cluster, you only need to pay for computing resources D. locked backup E. Large storage space

Discussion 0

Correct Answer: D Vote an answer

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Question 2

Alibaba Cloud DTS (Database Transmission Service) only supports MySQL databases.

A. True B. False

Discussion 0

Correct Answer: B Vote an answer

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Question 3

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

A. MaxCompute B. QuickBl C. DMS D. Data Works

Discussion 0

Correct Answer: C,D Vote an answer

Question 4

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

A. DG B. DAS C. DMS D. DTS E. DBS

Discussion 0

Correct Answer: C Vote an answer

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Question 5

When a backup file of core sensitive data is downloaded, business systems must be protected against data breaches. Which of the following capabilities must be enabled to ensure data security?

A. SOL audit B. Secure Sockets Layer (SSL) encryption C. Transparent Data Encryption (TDE) D. Virtual private cloud (VPC)

Discussion 0

Correct Answer: B Vote an answer

Question 6

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 only B. Logical migration tools C. Full backup and incremental backup D. Incremental backup only

Discussion 0

Correct Answer: B Vote an answer

Question 7

Which of these are NOT good use cases for DTS (Data Transmission Service)? (Number of correct answers: 2)

A. Saving database logs B. Undoing changes made to a database by mistake C. Incremental synchronization for disaster recovery D. Full database synchronization for database migration

Discussion 0

Correct Answer: A,B Vote an answer

Question 8

PolarDB for MySQL archive databases use log-structured merge-trees (LSM trees) and the Zstandard (ZSTD) data compression algorithm to increase the data compression ratio. How much storage can be saved, at most?

A. 50% B. 60% C. 70% D. 40%

Discussion 0

Correct Answer: C Vote an answer

Question 9

What does DIM mean in data warehouse terms?

A. Dimension table B. Common data model (CDM) C. Application data service (ADS) D. Operational data store (ODS)

Discussion 0

Correct Answer: A Vote an answer