Which of the following are the advantages of cloud databases over self-managed databases? (Number of correct answers: 3)

A. Stronger service level agreement (SLA)

B. Integrated operations and maintenance (OandM), as well as easier management

C. High availability and comprehensive backup and monitoring capabilities

D. High costs

Which of the following is the core benefit of ApsaraDB for Redis Enhanced Edition (Tair)?

A. Makes it easy to do business anywhere.

B. Makes data secure and independently managed.

C. Makes large amounts of data easier to process.

D. Makes data accessible online and in real time.

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 PolarDB-0 that is highly compatible with Oracle.

B. Use Advanced Database and Application Migration (ADAM) to evaluate the migration project.

C. Use ApsaraDB for Redis as a cache service to provide acceleration capabilities.

D. Use Data Transmission Service (DTS) to migrate data.

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. 3

B. 4

C. 5

D. 6

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 Nothing

C. Shared Everything

D. Dedicated

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

A. No, this type of migration isn't supported

B. You can migrate between MySQL and Oracle but not between PostgreSQL

C. Yes, migration between different types of databases is supported by DTS

You need to migrate a database that has a storage capacity of 50 GB to the cloud and can tolerate a service downtime of half an hour. In this case, which of the following migration methods is the optimal choice to migrate data to the cloud in terms of stability and availability?

A. Full backup and incremental backup

B. Full backup only

C. Logical migration tools

D. Incremental backup only

Which of the following features are provided by PolarDB-O's proxy? (Number of correct

A. Read/write splitting

B. Load balancing

C. Health checks for nodes

D. Failover strategies for high availability

E. Data encryption

Which database utility is used for data migration and synchronization?

A. DMS

B. DBS

C. DTS

D. DAS

E. ADAM

Which of the following features is provided by Data Management (DMS)?

A. Integrates data across multiple data sources

B. Backs up multiple types of databases

C. Evaluates the database migration project

D. Enables online database management, such as data query, database and table management, and permission management