Alibaba Cloud ACA-Database ACA Database Certification Online Training
Alibaba Cloud ACA-Database Online Training
The questions for ACA-Database were last updated at Nov 19,2024.
- Exam Code: ACA-Database
- Exam Name: ACA Database Certification
- Certification Provider: Alibaba Cloud
- Latest update: Nov 19,2024
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 MySQL
- B . PolarDB PosgreSQL
- C . PolarDB Oracle
- D . PolarDB Box
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
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
If a database exception occurs in a PolarDB cluster because important data is deleted by mistake, how i can data be restored?
- A . Level-2 backup + Redo log
- B . Level 1 backup + Redo log
- C . Level-2 backup
- D . Level-1 backup
Which database utility is good for database management and DevOps?
- A . DMS
- B . DBS
- C . DTS
- D . DAS
- E . ADAM
Which of the following statements is NOT correct about PolarDB?
- A . ApsaraDB for PolarDB is a cloud-native relational database service that is compatible with the MySQL, PostgreSQL, and Oracle engines
- B . Each ApsaraDB for PolarDB cluster supports up to 100 TB of storage space and can handle up to one million queries per second (QPS)
- C . ApsaraDB for PolarDB can scale clusters within a few minutes, recover from failures within a few seconds, and guarantee data consistency
- D . An ApsaraDB for PolarDB cluster can also be scaled out to a maximum of 16 nodes, and provide up to 6 times of performance improvement traditional MySQL clusters at a 30% to 50% cost reduction
- E . ApsaraDB for PolarDB is designed to handle large amounts of sequential queries
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 . Global Replica
- D . Data flashback
Which of the following is the high-availability service level that is specified in the ApsaraDB RDS Service Level Agreement (SLA)?
- A . 90%
- B . 99%
- C . 99.5%
- D . 99.99%
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
What does DIM mean in data warehouse terms?
- A . Dimension table
- B . Operational data store (ODS)
- C . Common data model (CDM)
- D . Application data service (ADS)
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