Design Resilient Architectures

A company hosts its static website assets in an Amazon S3 bucket located in the us-east-1 Region. To ensure high availability and resiliency, the company replicates these assets to a secondary S3 bucket in the us-west-2 Region. A solutions architect needs to configure Amazon CloudFront to deliver these assets with low latency and automatically serve files from the backup S3 bucket if the primary S3 bucket returns an HTTP 503 Service Unavailable error. Which configuration should the solutions architect use to meet these requirements?

An international logistics provider runs a critical tracking application using Amazon RDS for PostgreSQL in the us-east-1 Region. The company requires a disaster recovery (DR) solution in the us-west-2 Region with a Recovery Point Objective (RPO) of less than 5 minutes and a Recovery Time Objective (RTO) of less than 15 minutes. Additionally, the secondary region must serve read-only reporting workloads during normal operations to offload the primary database. Which combination of actions will meet these requirements? (Select TWO.)

A global agricultural logistics company is migrating its telemetry archiving system to AWS. The system must store critical supply chain data with an RPO of $15$ minutes and an RTO of $30$ minutes. The architecture must ensure the data is resilient to regional disasters and remains immediately readable from a secondary destination region for localized reporting. Which two configurations should the solutions architect combine to meet these resilience and recovery requirements?

A digital ticketing platform plans to migrate its database to Amazon Aurora MySQL. The database must sustain high availability during an Availability Zone outage with a recovery time objective (RTO) of less than 60 seconds and zero data loss (recovery point objective or RPO of 0). In addition, the database must dynamically scale to support a large, unpredictable volume of read queries. Which two configurations should a solutions architect implement to meet these requirements? (Select TWO.)

A healthcare software provider is deploying a critical patient portal application on AWS. The application database tier requires high availability within the primary Region (us-east-1) to survive the loss of an Availability Zone with a Recovery Time Objective (RTO) of under 60 seconds. Additionally, the provider requires a cross-region disaster recovery (DR) solution in the us-west-2 Region with a Recovery Point Objective (RPO) of under 1 minute and a Recovery Time Objective (RTO) of under 15 minutes. Which combination of database configurations will meet these requirements? (Select TWO.)

A maritime fleet management company is designing a high-availability telemetry processing system on AWS. The application runs on Amazon ECS containers across multiple Availability Zones in the primary region (`eu-west-1`). The containers require concurrent read/write access to a shared POSIX-compliant file system. The architecture must support a multi-region disaster recovery (DR) plan in `eu-central-1` with a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 10 minutes. During failover, the file system in the recovery region must be immediately writable without latency or performance degradation. Which combination of configurations will meet these requirements? (Select TWO.)

A SaaS provider is migrating its core multi-tenant application to AWS and requires a PostgreSQL-compatible database. The database architecture must guarantee high availability within a single AWS Region, with a Recovery Time Objective (RTO) of less than 30 seconds and a Recovery Point Objective (RPO) of near zero (under 1 second). Which database configuration meets these requirements with the lowest operational overhead?

A media production company hosts a shared file repository on-premises for video editing. The company wants to migrate its storage to AWS to improve resiliency and high availability while maintaining low-latency access for on-premises editors. The design requirements include a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 10 minutes for accessing archived footage. Which of the following solutions should a solutions architect recommend?

A healthcare provider is deploying a critical patient record application using Amazon RDS for MySQL. The database tier must withstand an Availability Zone (AZ) failure with zero data loss ($RPO = 0$) and support automatic failover in less than $45\text{ seconds}$ ($RTO < 45\text{ s}$). The application also requires horizontal scaling of read operations to prevent reporting dashboards from affecting the write performance of the primary database instance. Which database configuration meets these requirements with the least operational complexity?

A global legal technology platform hosts sensitive litigation documents consisting of scanned court files. The documents must be stored with $99.999999999\%$ (11 nines) of durability. The platform must maintain a disaster recovery plan across two AWS regions (primary and secondary) with a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 15 minutes for its storage tier. The files are frequently accessed during the first 30 days of active litigation, after which access drops significantly; however, any document must remain retrievable within milliseconds when requested. Which storage architecture meets these requirements with the lowest operational overhead?

A financial technology firm is deploying a transaction auditing application on Amazon EC2 instances distributed across two Availability Zones in the eu-west-1 Region. The application requires a shared, POSIX-compliant file system to store transaction journals. The architecture must survive the complete loss of an Availability Zone with zero data loss (RPO = 0) and continue serving requests without manual intervention. Additionally, the journals must be replicated to the eu-central-1 Region with a Recovery Point Objective (RPO) of less than 15 minutes and a Recovery Time Objective (RTO) of less than 10 minutes. Which storage design meets these requirements while minimizing operational overhead?

An international logistics company uses a critical PostgreSQL-compatible transactional database on AWS. The application demands high availability within its primary AWS Region ($eu-west-1$) with a Recovery Time Objective (RTO) of less than $60\text{ seconds}$ and a Recovery Point Objective (RPO) of $0$ (no data loss) in the event of an Availability Zone outage. Additionally, the company requires a cross-region disaster recovery (DR) architecture in $eu-central-1$ that supports an RPO of less than $5\text{ seconds}$ and an RTO of less than $15\text{ minutes}$. Which combination of database configurations will satisfy these requirements? (Select TWO.)

A healthcare provider hosts a web application where medical imaging files must be stored. The storage solution must allow multiple web servers running on Amazon EC2 instances in different Availability Zones to read and write to the files simultaneously. In the event of an Availability Zone outage, the storage must remain available with a Recovery Time Objective (RTO) of zero. Which storage solution meets these requirements with the least configuration effort?

A pharmaceutical company is designing a disaster recovery architecture for its genomic drug simulation datasets. The active datasets are stored in Amazon S3 in the `us-east-1` Region and are critical to clinical trial validation. Compliance mandates that these datasets must be replicated to a secondary AWS Region (`us-west-2`). The solution must guarantee a Recovery Point Objective (RPO) of $15\text{ minutes}$ and a Recovery Time Objective (RTO) of $30\text{ minutes}$ for read access to the replicated datasets in `us-west-2`. The replication mechanism must be asynchronous to prevent any performance impact on the primary simulation engines in `us-east-1`. Which configuration will meet these storage requirements?

A company serves its global API through Amazon EC2 instances behind Application Load Balancers (ALBs) in the us-east-1 and eu-west-1 Regions. Currently, Route 53 is configured with latency-based routing to distribute traffic across these regions. The company wants to establish an active-passive disaster recovery (DR) plan. If the application endpoints in both primary regions fail their health checks, Route 53 must automatically redirect all user traffic to a static maintenance webpage hosted in an Amazon S3 bucket in us-west-2. The recovery time objective (RTO) is under 10 minutes. Which Route 53 routing configuration should a solutions architect implement to meet these requirements?

An energy utility company's smart grid platform processes real-time telemetry from millions of meters. The ingestion layer runs on a fleet of Amazon EC2 instances distributed across three Availability Zones. This tier requires a shared, highly available file storage layer that supports concurrent read/write access. Additionally, the company must retain raw data logs for $7$ years to meet regulatory compliance, with an administrative requirement to retrieve any archived log within $15$ minutes.

Which combination of AWS storage configurations will meet these requirements? (Select TWO.)

An enterprise company hosts its customer portal under the domain name portal.finance.example.com. The primary infrastructure consists of an Application Load Balancer (ALB) and EC2 instances in the us-east-1 region. The company wants to set up an active-passive disaster recovery strategy. If the primary region goes offline or if the primary database loses connectivity, traffic must automatically redirect to an Amazon S3 bucket in the us-west-2 region hosting a static maintenance page. A custom health-check script on the EC2 instances monitors the database connection status. Which two configurations should the solutions architect implement to achieve this goal? (Select TWO.)

A digital real estate enterprise operates a property document management portal on AWS. The portal hosts critical PDF appraisal reports and legal deeds that require $99.999999999\%$ (11 nines) of data durability. These documents are frequently accessed during the first $30$ days of a listing. After this period, they are rarely accessed, but agents must be able to retrieve them in real-time (latency under $1$ second) during client meetings, establishing a Recovery Time Objective (RTO) of less than $10$ seconds. The architecture must remain highly available ($99.9\%$ availability) and resilient to the loss of an entire AWS Availability Zone (AZ). Which storage strategy meets these requirements most cost-effectively?

A digital media agency is building a collaborative video editing platform on AWS. The editing application runs on a fleet of Amazon EC2 instances distributed across multiple Availability Zones in a single AWS Region. The instances require concurrent read and write access to a shared file workspace with sub-millisecond latencies. Additionally, the agency must archive completed video projects to minimize storage costs. In the event of a disaster, the archived files must be fully recoverable within a Recovery Time Objective (RTO) of 10 minutes. Which combination of storage solutions should a solutions architect recommend?

A telehealth provider runs a medical imaging and patient record application on AWS. The application tier runs on a fleet of Amazon EC2 instances distributed across multiple Availability Zones in a single AWS Region. The application requires a shared storage layer to host patient medical images. This storage layer must allow concurrent read and write access from all EC2 instances. The architecture must achieve high availability with a Recovery Point Objective (RPO) of 0 and a Recovery Time Objective (RTO) of less than 1 minute against an Availability Zone outage. For compliance, the images must also be replicated to a secondary AWS Region. In the event of a disaster in the primary Region, the secondary Region must be able to serve the images with a recovery time (RTO) of less than 5 minutes. Which two configurations should a solutions architect recommend to build a resilient storage solution? (Select TWO.)