Practice Examples and Dumps & Tips for 2022 Latest ACA-Database Valid Tests Dumps
Latest [Jan 19, 2022] 100% Passing Guarantee - Brilliant ACA-Database Exam Questions PDF
Alibaba Cloud ACA-Database Exam Syllabus Topics:
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NEW QUESTION 21
Which of the following is not a relational database?
- A. Teradata
- B. DB2
- C. Redis
- D. Oracle
Answer: C
NEW QUESTION 22
Which type of the following logs is used to synchronize data between primary and secondary databases in RDS for MySQL?
- A. Redo log
- B. Error log
- C. Binary log
- D. Rollback log
Answer: C
NEW QUESTION 23
Which of the following features determines high performance of the performance-enhanced instances of ApsaraDB for Redis Enhanced Edition (Tair)?
- A. Multithreading
- B. Extended data structure modules
- C. Data flashback
- D. Global Replica
Answer: D
NEW QUESTION 24
Which of the following databases are supported by DTS (Database Transmission Service)? (Number of correct answers: 3)
- A. PostreSQL
- B. SQL Server
- C. DB2
- D. MySQL
Answer: A,B,D
Explanation:
Explanation
DB2 is supported, but very limited.
https://www.alibabacloud.com/help/doc-detail/176064.htm?spm=a2c63.l28256.b99.7.13c27142yYyvXz
NEW QUESTION 25
Which of the following types of data are most suitable for storage in MySQL databases?
- A. Structured data in rows and columns
- B. Large amounts of time series data
- C. Key-value (KV) data that is frequently read and written
- D. Document-oriented unstructured data
Answer: A
NEW QUESTION 26
You want to migrate from MySQL to PostgreSQL: is this supported by DTS?
- A. No, this type of migration isn't supported
- B. Yes, migration between different types of databases is supported by DTS
- C. You can migrate between MySQL and Oracle but not between PostgreSQL
Answer: B
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/176064.htm?spm=a2c63.p38356.b99.7.3191591dPlcLJa
NEW QUESTION 27
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
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/26652.htm?spm=a2c63.p38356.879954.26.2ab232664Wkc2m#co
NEW QUESTION 28
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. If the source database is not on Alibaba Cloud, it must be Internet accessible so that DTS can connect to it
- C. DTS is designed for file synchronization
- D. The source and destination database must both have a database user which DTS can use
Answer: A,C
NEW QUESTION 29
Which of the following features is provided by Data Management (DMS)?
- A. Evaluates the database migration project
- B. Enables online database management, such as data query, database and table management, and permission management
- C. Backs up multiple types of databases
- D. Integrates data across multiple data sources
Answer: A
NEW QUESTION 30
Alibaba Cloud DTS (Data Transmission Service) supports both full database migration and incremental synchronization.
- A. True
- B. False
Answer: A
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/176633.htm?spm=a2c63.p38356.b99.32.3e751a4dtHm9cr /
https://www.alibabacloud.com/help/doc-detail/56776.htm?spm=a2c63.p38356.b99.181.74896b5dro6cDo
NEW QUESTION 31
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. Cluster master-replica instances
- C. Single-node architecture
- D. Read/write splitting architecture in which standard master-replica instances are deployed
Answer: A,B,D
NEW QUESTION 32
Which of the following are database architectures which have emerged during the evolution of database systems? (Number of correct answers: 3)
- A. Single Instance
- B. Shared Everything
- C. Shared Nothing
- D. Dedicated
Answer: B,C,D
NEW QUESTION 33
Suppose you are using MySQL currently, if you want to migrate to cloud native database PolarDB with little effort, which one is the best choice?
- A. PolarDB Box
- B. PolarDB Oracle
- C. PolarDB PosgreSQL
- D. PolarDB MySQL
Answer: D
Explanation:
Explanation
https://www.alibabacloud.com/help/doc-detail/58768.htm?spm=a2c63.l28256.b99.10.71ce3784cXj0y8
NEW QUESTION 34
Which of the following deployment architectures are supported by Alibaba Cloud ApsaraDB for MongoDB?
(Number of correct answers: 3)
- A. Standalone instance
- B. Primary/secondary instance that consists of two nodes
- C. Replica set instance that consists of six nodes
- D. Replica set instance that consists of three nodes
- E. Sharded cluster instance
Answer: A,D,E
NEW QUESTION 35
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 36
Which of the following is the high-availability service level that is specified in the ApsaraDB RDS Service Level Agreement (SLA)?
- A. 99.99%
- B. 99.5%
- C. 99%
- D. 90%
Answer: A
NEW QUESTION 37
With ApsaraDB for MyBase, problems caused by a sudden spike in traffic are automatically resolved. How is this done?
- A. ApsaraDB for MyBase grants you host permissions. You can log on to hosts to troubleshoot business problems in an emergency.
- B. ApsaraDB for My Base allows you to deploy different types of instances in a cluster.
- C. ApsaraDB for MyBase supports elastic upgrade policies. If the resource utilization of a database exceeds the preset threshold during a business peak, ApsaraDB for MyBase can automatically upgrade database resource specifications to respond to the business peak.
- D. ApsaraDB for MyBase allows you to specify a host when you create an instance.
- E. ApsaraDB for MyBase supports the over commitment of CPU and disk resources.
Answer: E
NEW QUESTION 38
From which of the following data sources or databases can Data Lake Analytics (DLA) read data for analysis?
(Number of correct answers: 6)
- A. AnolyticDB
- B. Oracle
- C. MongoDB
- D. OSS
- E. HOLO
- F. MySQL
- G. OTS
Answer: A,B,C,D,F,G
NEW QUESTION 39
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