A healthcare provider is deploying a patient prescription tracking application across two … — AWS Certified Solutions Architect - Associate

A healthcare provider is deploying a patient prescription tracking application across two AWS Regions: $us-east-1$ (Primary) and $us-west-2$ (Secondary). The application backend uses an Amazon Aurora PostgreSQL DB cluster. The solutions architect must design a highly resilient architecture that meets a Recovery Time Objective (RTO) of under $5$ minutes and a Recovery Point Objective (RPO) of under $1$ minute for regional disaster recovery, while also providing high availability within the primary region (RTO of under $60$ seconds, RPO of $0$ ) and scaling read traffic locally in $us-west-2$ . Which two configurations should the solutions architect implement to meet these requirements? (Select two.)

Deploy the primary Amazon Aurora PostgreSQL DB cluster in $us-east-1$ across multiple Availability Zones, ensuring at least one reader instance is running in a different Availability Zone than the writer instance.Cevap
Configure an Amazon Aurora Global Database with the primary cluster in $us-east-1$ and a secondary cluster in $us-west-2$ , provisioning at least one reader instance in the secondary cluster.Cevap
C
Provision a single-AZ Aurora PostgreSQL DB cluster in $us-east-1$ and set up an Aurora Read Replica in $us-west-2$ , using a custom script to promote the replica to a standalone cluster if the primary region fails.
D
Use Amazon Route 53 with latency-based routing to distribute write operations to both $us-east-1$ and $us-west-2$ database endpoints simultaneously to minimize write latency for global users.
E
Implement a Warm Standby strategy by copying automated snapshots of the primary database to $us-west-2$ hourly, and provision a new Aurora DB cluster from the latest snapshot only during a regional disaster.

Cevap

Deploying the primary Amazon Aurora PostgreSQL DB cluster in us-east-1 across multiple Availability Zones, ensuring at least one reader instance is running in a different Availability Zone than the writer instance, and configuring an Amazon Aurora Global Database with the primary cluster in us-east-1 and a secondary cluster in us-west-2 containing at least one reader instance.

Deploying the primary Amazon Aurora PostgreSQL database cluster in a Multi-AZ configuration ensures that the storage layer replicates data across multiple Availability Zones synchronously. If the primary writer instance fails, Aurora automatically promotes a reader instance in a different Availability Zone in under 60 seconds with zero data loss, achieving the local high availability goals. Meanwhile, configuring an Amazon Aurora Global Database creates a dedicated cross-region replication channel. The database is replicated asynchronously at the physical storage level with replication lag typically under 1 second, meeting the 1-minute RPO. The secondary cluster reader instance in the secondary region scales local reads and can be promoted to a writer within minutes to meet the 5-minute RTO during a disaster recovery scenario.

Adım Adım Çözüm

Evaluate the high availability (HA) constraints in the primary region (

us-east-1

An RTO of under

60

seconds and RPO of

0

is identified. To meet this, the primary database must be deployed across multiple Availability Zones with synchronous storage replication and a standby reader instance ready for automatic failover.

Ensures that local infrastructure or AZ failure triggers automated failover with no data loss.

Evaluate the regional disaster recovery (DR) and read-scaling requirements in the secondary region (

us-west-2

An RTO of under

5

minutes and RPO of under

1

minute is identified, along with the need to serve local reads. A cross-region replication mechanism with sub-minute lag is required.

Determines the target disaster recovery mechanism that also allows active read workloads.

Select the correct combination of Amazon Aurora features to satisfy the constraints.

Aurora Multi-AZ deployment is selected for primary region HA, and Aurora Global Database with a secondary reader in us-west-2 is selected for regional DR and local read scaling.

Aurora Global Database replicates data storage-to-storage with a typical lag of under

1

second and supports seamless, low-RTO failovers.

Anahtar Kavram

Combining Amazon Aurora Multi-AZ deployment for local high availability with Amazon Aurora Global Database for cross-region disaster recovery and local read scaling.

Soru

Cevap

Adım Adım Çözüm

Anahtar Kavram

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