A company runs a critical database on Amazon RDS for PostgreSQL. The company requires high availability and automatic failover in the event of an Availability Zone outage. Which feature should be enabled?

Answer options:

Cross-Region Read Replicas

Multi-AZ deployment

Automated backups

Amazon Route 53 failover routing

How to approach this question

For RDS high availability and automatic failover, always choose Multi-AZ.

Full Answer

B.Multi-AZ deployment✓ Correct

Multi-AZ deployment

Amazon RDS Multi-AZ deployments provide enhanced availability and durability for DB instances. AWS automatically provisions and maintains a synchronous standby replica in a different Availability Zone. In the event of an outage, RDS automatically fails over to the standby.

Common mistakes

Confusing Read Replicas (for performance) with Multi-AZ (for high availability).

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