RDS Quiz
A database is being hosted using the AWS RDS service. This database is to be made into a production database and is required to have high availability. Which of the following can be used to achieve this requirement?
A. Use Multi-AZ for the RDS instance to ensure that a secondary database is created inanother region.
B. Use the Read Replica feature to create another instance of the DB in another region.
C. Use Multi-AZ for the RDS instance to ensure that a secondary database is created inanother Availability Zone.
D. Uset he Read Replica feature to create another instance of the DB in anotherAvailability Zone.
C. Use Multi-AZ for the RDS instance to ensure that a secondary database is created inanother Availability Zone.
Option A is incorrect because the Multi-AZ feature allows for high availability across Availability Zones and not regions.
Options B and D are incorrect because Read Replicas can be used to offload database reads. But if you want high availability then opt for the Multi-AZ feature.
AWS Documentation mentions the following:
Amazon RDS Multi-AZ deployments provide enhanced availability and durability for Database (DB) Instances, making them a natural fit for production database workloads. When you provision a Multi-AZ DB Instance, Amazon RDS automatically creates a primary DB Instance and synchronously replicates the data to a standby instance in a different Availability Zone (AZ).
For more information on AWS RDS Multi-AZ, please visit the following URL:
https://aws.amazon.com/rds/details/multi-az/
