Online Access Free ACA-Database Exam Questions

Which of the following is the lowest recovery point objective (RPO) for Database Backup Service?

• A.Seconds
• B.Days
• C.Minutes
• D.Hours

Each PolarDB cluster consists of one primary node and one or more read-only nodes. The system only support manually switch over services from the primary node to a read-only node.

• A.True
• B.False

Which of the following statements about MongoDB is NOT true?

• A.MongoDB can be deployed in cluster mode.
• B.MongoDB is a relational database.
• C.MongoDB is a document database.
• D.MongoDB supports transactions.

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 secure and independently managed.
• C.Makes it easy to do business anywhere.
• D.Makes data accessible online and in real time.

PolarDB for MySQL allows you to deploy a cluster across multiple zones. Compared with single-zone clusters, multi-zone clusters have better disaster recovery capabilities and can withstand data centre-level faults.

• A.True
• B.False