AWS Certified Developer Associate Practice Test 4

Correct answer - "RDS Read Replicas" : You can reduce the load on your source DB instance by routing read queries from your applications to the read replica. In other words for read-only queries, change the database source in the application to point to the new read replica database.

Incorrect:

"RDS Multi AZ" - In a Multi-AZ deployment, Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability Zone in which no changes are made on your part

"RDS backups" - You can create a backup manually or automated it but no change to the code is required

"RDS Maintenance Upgrades" - Some maintenance items require that Amazon RDS take your DB instance offline for a short time which does not involve code changes

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