ACA-Database Practice Exam Tests Latest Updated on Jan-2022 [Q13-Q30]

ACA-Database Practice Exam Tests Latest Updated on Jan-2022

Pass ACA-Database Exam in First Attempt Guaranteed Dumps!

Alibaba Cloud ACA-Database Exam Syllabus Topics:

Topic	Details
Topic 1	From cloud native to cloud dedicate: MyBase database dedicated cluster Development history and future trend of database
Topic 2	Common operation of Alibaba Cloud database (database creation, basic operation and maintenance, monitoring, connection, etc.)
Topic 3	Alibaba Cloud database products portfolio Basic concepts of database (SQL, index, view, transaction, log, etc.)
Topic 4	Infrastructure, core functions and application scenarios of PolarDB, which is Alibaba Cloud Native database representative Mainstream tools include: ADAM, DTS, DMS, DBS
Topic 5	Core capabilities and basic operations of Alibaba Cloud database tools and utilities Fast construction of cloud native data
Topic 6	Database Overview Relational Database NoSQL Data Warehouse ADB database infrastructure, core functions and application scenarios
Topic 7	Infrastructure, core functions and application scenarios of Alibaba cloud database: Tair (Redis enterprise version) and Apsara DB for MongoDB
Topic 8	DLA infrastructure, core functions and application scenarios Cloud database edition and engine selection how-to

 

NEW QUESTION 13
Which of the following is NOT true, regarding the sensitive data management feature provided by Data Management (DMS)?

• A. Field-level and row-level permissions are supported.
• B. The rules of field metadata and data content can be automatically recognized.
• C. De-identification algorithms can be managed. Multiple algorithms are supported, such as algorithms for masking specific positions and replacing fixed characters.
• D. After you configure de-identification algorithms, you can view the de-identified data.

Answer: D

 

NEW QUESTION 14
Which of the following tools can be used to migrate an on-premises database to Alibaba Cloud while causing minimal service downtime?

• A. pg_dump
• B. pg_basebackup
• C. pg_restore
• D. pg_upgrade D.DTS

Answer: B

 

NEW QUESTION 15
Which of the following statements about MongoDB is NOT true?

• A. MongoDB is a relational database.
• B. MongoDB is a document database.
• C. MongoDB can be deployed in cluster mode.
• D. MongoDB supports transactions.

Answer: A

 

NEW QUESTION 16
If a database exception occurs in a PolarDB cluster because important data is deleted by mistake, how i can data be restored?

• A. Level-1 backup
• B. Level-2 backup
• C. Level-2 backup + Redo log
• D. Level 1 backup + Redo log

Answer: C

 

NEW QUESTION 17
Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB?
(Number of correct answers: 3)

• A. Sharded cluster instance
• B. Replica set instance that consists of three nodes
• C. Standalone instance
• D. Replica set instance that consists of six nodes
• E. Primary/secondary instance that consists of two nodes

Answer: A,B,C

 

NEW QUESTION 18
Which of the following specifications of AnalyticDB supports tiered storage of cold and hot data?

• A. C series
• B. S series
• C. Elastic Mode
• D. Basic Edition

Answer: C

 

NEW QUESTION 19
Which of the following is not a component of the PolarDB-0 architecture in Apsara Stack?

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

Answer: D

 

NEW QUESTION 20
Which of the following features is NOT supported by Data Transmission Service (DTS)?

• A. Data backup
• B. Data migration
• C. Change tracking
• D. Data synchronization

Answer: C

 

NEW QUESTION 21
Which of the following statements about the compatibility of AnalyticDB for PostgreSQL is NOT true?

• A. Support for the Java Database Connectivity (JDBC) protocol
• B. Support for the SQL2003 syntax standard
• C. Fully compatible with Oracle syntax
• D. Compliance with PostgreSQL and Greenplum protocols

Answer: C

 

NEW QUESTION 22
Which of the following features determines high performance of the performance-enhanced instances of ApsaraDB for Redis Enhanced Edition (Tair)?

• A. Extended data structure modules
• B. Multithreading
• C. Data flashback
• D. Global Replica

Answer: D

 

NEW QUESTION 23
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

Answer: A,B,C

 

NEW QUESTION 24
Which database utility is used for data migration and synchronization?

• A. DTS
• B. DAS
• C. DBS
• D. ADAM
• E. DMS

Answer: A

Explanation:
Explanation
Data Transmission Service is charged based according to three models: Data Synchronization, Data Migration, Change Tracking. https://www.alibabacloud.com/product/data-transmission-service/pricing

 

NEW QUESTION 25
Which of the following is NOT true, regarding DTS (Database Transmission Service)?

• A. DTS supports multiple database engines
• B. DTS cannot be used for incremental database synchronization
• C. DTS works for database both on and off Alibaba Cloud
• D. DTS can migrate both data and table schema

Answer: B

Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/56776.htm?spm=a2c63.p38356.b99.181.74896b5dro6cDo

 

NEW QUESTION 26
You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.

• A. False
• B. True

Answer: B

Explanation:
Explanation
Each node in a PolarDB cluster has a failover priority. The system performs the following steps to automatically elect a primary node:
Find all the read-only nodes that can be elected as the primary node.
Select one or more read-only nodes that have the highest failover priority.
If the failover to the first node fails due to reasons, such as network issues and abnormal replication status, the system tries to switch to another node until the failover succeeds.
https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0

 

NEW QUESTION 27
Which of the following computing capabilities are supported by AnalyticDB? (Number of correct answers: 4)

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

Answer: A,B,C,D

 

NEW QUESTION 28
Which of the following is NOT supported by schema migration in Advanced Database & Application Migration (ADAM)?

• A. Re-migrate the failed schemas
• B. Customize schema migration
• C. Re-migrate all schemas
• D. Migrate the schemas that require a manual revision but have not been revised

Answer: D

 

NEW QUESTION 29
Which of the following data is not collected when database information is collected in Advanced Database & Application Migration (ADAM)?

• A. Historical performance data
• B. Database configuration data
• C. Business data
• D. Business structure data

Answer: C

 

NEW QUESTION 30
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