ACA-Database 無料問題集「Alibaba Cloud ACA Database Certification」

（A）pg_basebackup

（B）pg_upgrade D.DTS

（C）pg_restore

（D）pg_dump

（A）The three-node Enterprise Edition architecture, which ensures zero data loss

（B）The single-node Basic Edition architecture, which can be used in test and non-core production environments

（C）The serverless architecture, in which computing resources are charged based on the Pay-As-You-Go (PAYG) billing method

（D）The high-avail ability architecture, in which primary and read-only nodes are deployed to implement automatic failovers

（A）70%

（B）60%

（C）50%

（D）40%

（A）Binary log

（B）Redo log

（C）Rollback log

（D）Error log

（A）ApsaraDB for MyBase supports the over commitment of CPU and disk resources.

（B）ApsaraDB for MyBase grants you host permissions. You can log on to hosts to troubleshoot business problems in an emergency.

（C）ApsaraDB for MyBase allows you to specify a host when you create an instance.

（D）ApsaraDB for My Base allows you to deploy different types of instances in a cluster.

（E）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.

（A）Simple point query

（B）Interactive analysis

（C）Machine Learning

（D）Real-time update

（E）Complex extract, transform, load (ETL)

（A）False

（B）True

（A）PolarDB for SQLserver

（B）PolarDB for Oracle

（C）PolarDB for Mysql

（D）PolarDB for Postgres

（A）The permissions of the accounts of resigned or transferred personnel can be automatically managed by using OpenAPI.

（B）You must create different database accounts for each Alibaba Cloud account.

（C）You cannot directly submit changes even if you have permissions to make changes.

（D）You can assign different resources and operation permissions to an Alibaba Cloud account as needed.