A user is configuring the Multi AZ feature of an RDS DB. The user came to know that this RDS DB does not use the AWS
technology, but uses server mirroring to achieve HA. Which DB is the user using right now?

A.
My SQL

B.
Oracle

C.
MS SQL

D.
PostgreSQL

Explanation:
Amazon RDS provides high availability and failover support for DB instances using Multi AZ deployments. In a Multi AZ
deployment, Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability
Zone. Multi AZ deployments for Oracle, PostgreSQL, and MySQL DB instances use Amazon technology, while SQL
Server (MS SQL) DB instances use SQL Server Mirroring.