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Alibaba Cloud ACA-Database Exam Syllabus Topics:
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NEW QUESTION 15
Which of the following is the lowest recovery point objective (RPO) for Database Backup Service?
- A. Seconds
- B. Hours
- C. Days
- D. Minutes
Answer: D
NEW QUESTION 16
From which of the following data sources or databases can Data Lake Analytics (DLA) read data for analysis?
(Number of correct answers: 6)
- A. HOLO
- B. OSS
- C. Oracle
- D. MySQL
- E. MongoDB
- F. AnolyticDB
- G. OTS
Answer: B,C,D,E,F,G
NEW QUESTION 17
Which of the following is not a feature or usage scenario of Data Lake Analytics (DLA)?
- A. Batch processing
- B. Online transaction processing
- C. Stream or micro-batch processing
- D. Interactive analysis
Answer: B
NEW QUESTION 18
Which of the following are the advantages of cloud databases over self-managed databases? (Number of correct answers: 3)
- A. High costs
- B. Integrated operations and maintenance (O&M), as well as easier management
- C. Stronger service level agreement (SLA)
- D. High availability and comprehensive backup and monitoring capabilities
Answer: B,C,D
NEW QUESTION 19
Which of the following databases are supported by DTS (Database Transmission Service)? (Number of correct answers: 3)
- A. PostreSQL
- B. SQL Server
- C. MySQL
- D. DB2
Answer: A,B,C
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 20
lf Oracle databases need to be migrated to Alibaba Cloud, which of the following product solutions :an be recommended? (Number of correct answers: 3)
- A. Use ApsaraDB for Redis as a cache service to provide acceleration capabilities.
- B. Use Data Transmission Service (DTS) to migrate data.
- C. Use Advanced Database & Application Migration (ADAM) to evaluate the migration project.
- D. Use PolarDB-0 that is highly compatible with Oracle.
Answer: B,C,D
NEW QUESTION 21
Which are the supported DB engine for PolarDB so far? (The number of answer: 3)
- A. PolarDB for Postgres
- B. PolarDB for Oracle
- C. PolarDB for Mysql
- D. PolarDB for SQLserver
Answer: A,B,C
Explanation:
Explanation
PolarDB is a cloud-native relational database compatible with MySQL, PostgreSQL, and Oracle.
https://www.alibabacloud.com/product/polardb
NEW QUESTION 22
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. Fully compatible with Oracle syntax
- C. Support for the SQL2003 syntax standard
- D. Compliance with PostgreSQL and Greenplum protocols
Answer: B
NEW QUESTION 23
Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?
- A. Makes large amounts of data easier to process.
- B. Makes data accessible online and in real time.
- C. Makes data secure and independently managed.
- D. Makes it easy to do business anywhere.
Answer: B
NEW QUESTION 24
Which of the following statements about Data Transmission Service (DTS) migration scenarios is NOT true?
- A. DTS can migrate data from one source database to several destination databases, for example, A > B and A > C.
- B. DTS can migrate data from several source databases to one destination database, for example, A > C and B > C.
- C. DTS can migrate data from one source database to one destination database, for example, A > B.
- D. DTS can migrate data in a circular way, for example, A > B > C > A.
Answer: D
NEW QUESTION 25
Which of the followings is NOT a correct way to connect to PolarDB?
- A. Use DMS to connect to a cluster
- B. Use a client like HeidiSQL to connect to a cluster
- C. Use PolarDB console to log into a cluster
- D. Use the command line like 'mysql' to connect to a cluster
Answer: C
Explanation:
Explanation
Use the PolarDB console to log on to Database.
https://www.alibabacloud.com/help/doc-detail/68511.htm?spm=a2c63.p38356.879954.7.7c2855b1aLLHjb#task-
NEW QUESTION 26
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. Single-node architecture
- D. Cluster master-replica instances
Answer: A,B,D
NEW QUESTION 27
Which of the following are relational databases? (Number of correct answers: 5)
- A. SQL Server
- B. Redis
- C. Oracle
- D. HBase
- E. MySQL
- F. MongoDB
- G. MariaDB
- H. PostgreSQL
- I. TSDB
Answer: A,C,E,G,H
NEW QUESTION 28
Which of the following tasks cannot be completed by using Advanced Database & Application Migration (ADAM)?
- A. Data structure conversion
- B. Performance monitoring
- C. De-Oracle workload evaluation
- D. Data migration
Answer: A
NEW QUESTION 29
Which of the following types of data that is stored in PostgreSQL databases can support the one-to-many data model? (Number of correct answers: 3)
- A. String
- B. Cube
- C. GIS
- D. JSON
- E. JSONB
- F. Range
- G. Array
Answer: A,D,G
NEW QUESTION 30
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. DTS is designed for file synchronization
- D. If the source database is not on Alibaba Cloud, it must be Internet accessible so that DTS can connect to it
Answer: A,C
NEW QUESTION 31
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