Amazon RDS provides high availability and failover support for DB instances using _______.

Amazon RDS provides high availability and failover support for DB instances using _______.
A . customized deployments
B . Appstream customizations
C . log events
D . Multi-AZ deployments

Answer: D

Explanation:

Amazon RDS provides high availability and failover support for DB instances using Multi-AZ deployments. Multi-AZ deployments for Oracle, PostgreSQL, MySQL, and MariaDB DB instances use Amazon technology, while SQL Server DB instances use SQL Server Mirroring.

Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html