CLF-C02 · Question #77
Which feature of Amazon RDS provides the ability to automatically create a primary database instance and to synchronously replicate data to an instance in another Availability Zone?
The correct answer is C. Multi-AZ deployment. Multi-AZ deployment is correct because it is specifically designed to provide high availability by automatically provisioning a standby replica in a different Availability Zone and synchronously replicating data to it - exactly what the question describes. Read replicas (A) use a
Question
Which feature of Amazon RDS provides the ability to automatically create a primary database instance and to synchronously replicate data to an instance in another Availability Zone?
Options
- ARead replicas
- BBlue/green deployment
- CMulti-AZ deployment
- DReserved Instances
How the community answered
(25 responses)- A4% (1)
- C88% (22)
- D8% (2)
Explanation
Multi-AZ deployment is correct because it is specifically designed to provide high availability by automatically provisioning a standby replica in a different Availability Zone and synchronously replicating data to it - exactly what the question describes.
Read replicas (A) use asynchronous replication and are designed for read scaling, not high availability or automatic failover. Blue/green deployments (B) are used for low-risk database updates and staging, not cross-AZ replication. Reserved Instances (D) are a billing/pricing model for cost savings, not a replication or availability feature.
Memory tip: Think "Multi-AZ = Multiple Zones = automatic failover and synchronous replication for HA." If you see the words synchronous, standby, or automatic failover in an RDS question, the answer is almost always Multi-AZ.
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