Online Access Free ACA-Database Practice Test

PolarDB for MySQL uses shared distributed storage and supports dual-zone deployment by default. How many data replicas are available across the two zones?

• A.5
• B.3
• C.6
• D.4

You want to migrate from MySQL to PostgreSQL: is this supported by DTS?

• A.You can migrate between MySQL and Oracle but not between PostgreSQL
• B.Yes, migration between different types of databases is supported by DTS
• C.No, this type of migration isn't supported

Which of the following is the high-availability service level that is specified in the ApsaraDB RDS Service Level Agreement (SLA)?

• A.99.5%
• B.99%
• C.90%
• D.99.99%

Which of the following are the core technologies behind Database Backup Service? (Number of correct answers: 3)

• A.High mount speeds (a few seconds)
• B.Multi-cloud and multi-backend backup
• C.Real-time synchronization
• D.Online query and analysis

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 Data Transmission Service (DTS) to migrate data.
• B.Use ApsaraDB for Redis as a cache service to provide acceleration capabilities.
• C.Use PolarDB-0 that is highly compatible with Oracle.
• D.Use Advanced Database & Application Migration (ADAM) to evaluate the migration project.