Which configurations will result in the LEAST application downtime during a failover?

A manufacturing company’s website uses an Amazon Aurora PostgreSQL DB cluster.

Which configurations will result in the LEAST application downtime during a failover? (Choose three.)
A . Use the provided read and write Aurora endpoints to establish a connection to the Aurora DB cluster.
B . Create an Amazon CloudWatch alert triggering a restore in another Availability Zone when the primary Aurora DB cluster is unreachable.
C . Edit and enable Aurora DB cluster cache management in parameter groups.
D . Set TCP keepalive parameters to a high value.
E . Set JDBC connection string timeout variables to a low value.
F . Set Java DNS caching timeouts to a high value.

View Answer

Answer: ABC