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(An administrator plans to deploy a database to AWS that supports the following: multiple Availability Zones, a standby database instance that provides failover support, a database instance that allows only read-only connections. Which two database solutions should the administrator use? Choose 2 answers.)
Correct Answer: B,C
To meet the requirements, the administrator should use an Amazon RDS Multi-AZ DB instance for multiple Availability Zones and failover support, and an Amazon Aurora DB instance with Aurora Replica for a read- only connection. The RDS Multi-AZ configuration automatically provisions a standby instance in a different AZ for failover, while Aurora Replicas provide read-only instances for scaling read traffic. The WGU Cloud Deployment and Operations Study Guide (Section 7.1, RDS and Aurora) states, "RDS Multi-AZ deploys a standby instance across AZs for failover, and Aurora Replicas are read-only instances that enhance performance by offloading read traffic from the primary instance." Options A and D are incorrect as multi- master replication and Multi-AZ clusters do not align with the read-only requirement.
