Design Resilient Architectures

A company is designing a high-throughput, fault-tolerant payment processing system running on Amazon EC2 instances across multiple Availability Zones. The architecture must withstand the sudden failure of any single AZ without dropping active database transactions or corrupting state. Which TWO design practices should the solutions architect implement?

A high-traffic application uses an Application Load Balancer (ALB) and an Auto Scaling group (ASG). During peak hours, some EC2 instances fail, but the ASG does not replace them immediately because the instances are still in a 'running' state despite the application being unresponsive. How should the architect fix this?

A web application runs on Amazon EC2 instances managed by an Auto Scaling group across three Availability Zones behind an Application Load Balancer. The application performs heavy computations that consume high CPU resources. Users report intermittent 504 Gateway Timeouts during peak hours. The solutions architect notices that newly launched instances take several minutes to bootstrap before they can serve traffic. How should the architect resolve this issue?

A financial application stores data in Amazon Aurora. The architecture must survive a regional outage. Which TWO steps should the architect take to meet this requirement?

A company hosts a monolithic application on EC2. They want to move to a microservices architecture to improve fault isolation. Which approach is best?

An architect is designing a system that must be resilient against AWS regional failure. Which AWS service is best suited to manage global DNS traffic and provide health-based routing?

A company needs a Disaster Recovery (DR) strategy with an RTO of 30 minutes and an RPO of 15 minutes. They want to minimize costs while having a scaled-down version of their core environment always running in a second region. Which DR strategy should they use?

An application uses Amazon DynamoDB. To ensure the application remains resilient to regional outages, what is the best approach?

Refer to the exhibit. An application needs to store highly durable data in S3. The architect wants to ensure data is protected against accidental deletion while maintaining cost-effective storage. What should be done?

A global e-commerce enterprise runs its checkout workflow using AWS Lambda functions integrated with Amazon API Gateway. During flash sales, traffic spikes cause downstream payment APIs to timeout, leading to lost transactions and frustrated customers. The solutions architect needs to redesign the architecture to decouple the frontend from the payment processor and ensure no transaction requests are lost. What should the architect do?

A company is designing a mission-critical database architecture using Amazon RDS. Which TWO steps should the architect take to ensure high availability and data durability? (Select TWO.)

Refer to the exhibit. The current IAM policy allows an EC2 instance to read backups. The architect wants to ensure the data is recoverable if the source bucket is compromised by an external actor with write access. What should be done?

An application uses a monolithic architecture on EC2 instances. The company wants to improve resilience against regional failures. Which TWO actions should the architect take to achieve this? (Select TWO.)

An application is deployed across two AWS Regions to ensure resilience. The architect needs to direct users to the healthy region with the lowest latency. If the primary region fails, traffic should fail over automatically. Which Route 53 routing policy should be implemented?

A company's web application requires a highly available database layer to survive an Availability Zone failure without manual intervention. The database must remain accessible during maintenance windows and ensure zero data loss. Which solution meets these requirements with the least operational overhead?

A company runs a mission-critical web application on EC2. The database is on RDS. How should the architect ensure the fastest possible recovery time objective (RTO) if the primary database instance fails?

An application consists of a web tier and an application tier. The web tier must be accessible from the internet, but the application tier must remain private. How should the architect configure the network for maximum resilience?

A company is using AWS Direct Connect to connect their on-premises data center to AWS. What is the most resilient way to connect?

A mission-critical application requires a recovery time objective (RTO) of near-zero. Which disaster recovery strategy should the architect implement?

A media streaming company stores high-value video assets in an Amazon S3 bucket. The company requires a resilient storage architecture that protects against accidental deletion, malicious overwrites, and zonal or regional outages. Which combinations of features should a Solutions Architect implement to achieve these requirements? (Choose TWO.)

A web application stores static files in Amazon S3. Due to regulatory requirements, the company must ensure that the files are replicated to a secondary region. What is the most efficient way to achieve this?

Refer to the exhibit. An application running on EC2 is receiving signature errors when accessing S3. The application uses an IAM role. What should the architect investigate first?

A security team is concerned about accidental or malicious deletion of critical objects in an Amazon S3 bucket. Which TWO features should be enabled to prevent permanent data loss and require additional authentication for deletions?

A company has a legacy application that requires a persistent file system shared across multiple EC2 instances. The file system must be highly available and support standard file system protocols. Which solution is most appropriate?

A company hosts a web application on Amazon EC2 instances behind an Application Load Balancer. The application stores session state in the local memory of the EC2 instances. Users report losing their sessions when the Auto Scaling group scales in or replaces unhealthy instances. Which solution ensures session persistence while maintaining high availability?

An enterprise financial application stores critical transaction records in Amazon Aurora MySQL. The company requires a cross-Region disaster recovery strategy with a Recovery Point Objective of less than 1 minute and a Recovery Time Objective of less than 5 minutes. Which architecture achieves this?

An application processes large batches of data from an S3 bucket. The process can take hours. If an instance fails, the batch is lost. Which design pattern ensures the most resilient batch processing?

Refer to the exhibit. A solutions architect reviewed an AWS CloudFormation template used to deploy an Auto Scaling group for a production web application. During an AWS Availability Zone outage in us-east-1, users experienced partial application downtime even though the Auto Scaling group reported instances running. Why is this architecture failing resiliency best practices?

A company hosts a web application on EC2 instances behind an Application Load Balancer (ALB). The application requires high availability across two Availability Zones (AZs). Which architectural design ensures the most resilient traffic distribution?

A media streaming company stores millions of video assets in an Amazon S3 bucket. Compliance regulations mandate that objects must be protected against accidental deletion, malicious tampering, and region-wide disasters. The solution must prevent permanent deletion even by users with root credentials during a retention period. Which combination of features meets these requirements?

An organization needs to improve the resilience of its EC2-based application. Which THREE actions should the architect perform? (Select THREE.)

A global gaming company wants to reduce latency for its players who are distributed worldwide. The application uses UDP-based traffic and requires a static entry point to simplify firewall management. Which service should the architect recommend to optimize the network path?

A database administrator needs to ensure that an Amazon RDS for MySQL instance can withstand an Availability Zone failure and provide low-latency reads for a reporting application. Which TWO steps should be taken?

A solutions architect is designing a mission-critical web application running on Amazon EC2 instances behind an Application Load Balancer. The application must remain highly available even during an Availability Zone outage. Which deployment strategy meets this requirement with optimal resilience?

A financial services company is hosting a critical web application on Amazon EC2 instances behind an Application Load Balancer. The application must remain available even if an entire AWS Region experiences a major outage. The database tier uses Amazon Aurora Global Databases. Which solution provides the most resilient multi-Region architecture with automated failover?

A company hosts a web application on EC2 instances behind an Application Load Balancer. The application stores session state in local memory, causing users to be logged out whenever the load balancer routes requests to different instances. Which solution provides the most resilient, scalable architecture to resolve this?

A solutions architect is designing a mission-critical web application that runs on Amazon EC2 instances behind an Application Load Balancer. The application must remain available even if an entire AWS Region experiences a catastrophic failure. The RPO must be near zero, and the RTO must be less than 15 minutes. Which disaster recovery strategy should the architect implement?