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AWS Certified Solutions Architect – Associate (SAA-C03) practice questions

211 free questions with answers and explanations.

Practice test
  1. 1.A financial institution requires a highly available and fault-tolerant architecture for its core banking application. The application runs on Amazon EC2 instances behind an Application Load Balancer (ALB) and uses Amazon Aurora for its database. The institution needs to ensure that the application can withstand the failure of an entire AWS Availability Zone (AZ) with minimal downtime and no data loss. Which solution provides the necessary resilience for the Aurora database?Design Resilient Architectures
  2. 2.A company is designing a microservices application where different services need to communicate asynchronously. Each service processes messages independently, and messages must be reliably delivered even if a service is temporarily unavailable. The solution should also allow for fan-out messaging to multiple consumers. Which AWS messaging service should be used?Design Resilient Architectures
  3. 3.A global real estate company hosts its property listing website on AWS. The website experiences consistent, high traffic globally. They need to ensure optimal performance and availability for users worldwide by routing traffic to the nearest healthy application endpoint. The application runs on Amazon EC2 instances behind Application Load Balancers in multiple AWS regions. Which AWS service should be used to achieve this global traffic management and performance optimization?Design Resilient Architectures
  4. 4.A global gaming company needs to store petabytes of user-generated content, including video clips and screenshots. This data is accessed frequently for the first 30 days, then less frequently for the next 60 days, and rarely after 90 days, but must be retained for 10 years. The company wants to minimize storage costs while maintaining high availability for frequently accessed data. Which S3 storage classes and lifecycle policy configuration should be used?Design Resilient Architectures
  5. 5.A global manufacturing company uses a critical application that processes real-time sensor data from factories worldwide. The application is deployed in a single AWS region and relies on an Amazon DynamoDB table for storing and retrieving this data. The company needs to ensure that the application remains operational with minimal data loss (RPO < 1 minute) and low recovery time (RTO < 5 minutes) in the event of a regional outage. Which DynamoDB feature should be implemented?Design Resilient Architectures
  6. 6.A global e-commerce company is experiencing inconsistent user experience and high latency for customers in geographically distant regions. Their web application is hosted on EC2 instances in a single AWS region and uses Amazon RDS for its database. They want to improve performance and availability for all users worldwide without re-architecting the entire application. Which AWS service should they implement to achieve this goal?Design Resilient Architectures
  7. 7.A global manufacturing company uses a critical application that processes real-time sensor data from factories worldwide. This data is stored in a relational database, and the company requires continuous availability and automatic failover in case of an Availability Zone (AZ) outage. Data consistency is paramount, and the solution must handle high transaction rates. Which AWS database service and configuration should be chosen?Design Resilient Architectures
  8. 8.A media streaming company is building a new video processing pipeline that needs to handle highly variable workloads, from a few hundred videos per hour to tens of thousands during peak events. The processing tasks are stateless and can be executed independently. The company wants to minimize operational overhead and only pay for the compute resources consumed during actual processing. Which AWS service is most suitable for this use case?Design Resilient Architectures
  9. 9.A company is hosting a critical web application on AWS using an Application Load Balancer (ALB) in front of an Auto Scaling group of EC2 instances across multiple Availability Zones. They need to ensure that user sessions are maintained, meaning a user's subsequent requests are routed to the same EC2 instance that handled their initial request. Which ALB feature should be enabled?Design Resilient Architectures
  10. 10.A global e-commerce company uses Amazon S3 to store static assets (images, videos, JavaScript files) for its website. They want to ensure that users worldwide experience the fastest possible load times for these assets while also reducing the load on their origin S3 bucket. Which service combination provides the optimal solution?Design Resilient Architectures
  11. 11.A healthcare provider is migrating a legacy on-premises application to AWS. The application uses a monolithic architecture and is sensitive to network latency. The provider needs to ensure that the application remains highly available and fault-tolerant across multiple Availability Zones, with the ability to quickly recover from an AZ outage without re-architecting the application significantly. Which AWS networking component is crucial for enabling this seamless multi-AZ deployment and rapid failover?Design Resilient Architectures
  12. 12.A company is designing a microservices application where different services need to communicate asynchronously without direct coupling. They require a mechanism for services to publish events and for other services to subscribe to and process these events reliably. The solution must support both point-to-point and fan-out messaging patterns. Which AWS service should be used?Design Resilient Architectures
  13. 13.A global online gaming company needs to store petabytes of game session data, user profiles, and in-game assets. This data is frequently accessed for a few weeks after creation for analytics and reporting, but then becomes infrequently accessed and eventually needs to be archived for compliance purposes for several years. The company wants to optimize storage costs while maintaining accessibility. Which S3 storage class strategy should be implemented?Design Resilient Architectures
  14. 14.A media company is building a new video processing pipeline on AWS. The pipeline needs to handle highly variable workloads, sometimes processing thousands of videos simultaneously and at other times being nearly idle. The solution must be cost-effective and automatically adjust capacity based on demand. Which AWS service is best suited to manage the compute resources for this fluctuating workload?Design Resilient Architectures
  15. 15.A global e-commerce company is experiencing intermittent performance issues with its web application during peak traffic. The application is hosted on Amazon EC2 instances behind an Application Load Balancer (ALB). Users report slow page loads and occasional timeouts. The company wants to improve the responsiveness and availability of the application without significantly re-architecting the existing setup. Which AWS service should be implemented to address these performance and availability concerns?Design Resilient Architectures
  16. 16.A global e-commerce company hosts its primary application in the `us-east-1` region. Due to regulatory compliance and business continuity requirements, they need to implement a disaster recovery strategy that can restore their application in a different AWS region with a Recovery Time Objective (RTO) of less than 4 hours and a Recovery Point Objective (RPO) of less than 1 hour. The solution must minimize continuous operational costs while providing a functional, though scaled-down, environment ready for quick failover. Which disaster recovery strategy should they implement?Design Resilient Architectures
  17. 17.A global SaaS provider hosts its primary application in the `us-east-1` region and serves customers worldwide. The company wants to implement a disaster recovery (DR) strategy that can sustain a regional outage with a Recovery Time Objective (RTO) of less than 1 hour and a Recovery Point Objective (RPO) of less than 15 minutes. The application uses Amazon Aurora PostgreSQL as its primary database. Which DR strategy should be recommended?Design Resilient Architectures
  18. 18.A global technology company operates a mission-critical application with a multi-tier architecture, including web servers, application servers, and a database. The application is hosted in a single AWS region, `us-east-1`. The company needs to implement a disaster recovery (DR) strategy that minimizes recovery time objective (RTO) to less than 15 minutes and recovery point objective (RPO) to less than 5 minutes, in case of a regional disaster. The DR solution must be cost-effective during normal operations. Which DR strategy is most appropriate?Design Resilient Architectures
  19. 19.A media company is developing a new streaming service. They need to ensure that user sessions are maintained consistently, even if the underlying EC2 instance serving a user's request becomes unhealthy or is terminated. The application runs on EC2 instances behind an Application Load Balancer (ALB). Which ALB feature should be enabled to meet this requirement?Design Resilient Architectures
  20. 20.A data analytics company uses Amazon Redshift for its data warehousing needs. They have a primary Redshift cluster in `us-west-2` and need to ensure business continuity and disaster recovery with minimal data loss in case of a regional outage. The recovery point objective (RPO) must be near zero, and the recovery time objective (RTO) should be as low as possible. Which Redshift feature should be implemented?Design Resilient Architectures
  21. 21.A global e-commerce company wants to improve the performance and availability of its web application for users worldwide. The application serves static content (images, JavaScript, CSS) and dynamic content (API responses). The company needs to minimize latency and protect against DDoS attacks. Which combination of AWS services should be used?Design Resilient Architectures
  22. 22.A news media company needs to build a highly scalable and fault-tolerant system to ingest, process, and distribute real-time breaking news updates to millions of subscribers. The system must handle bursts of incoming data, decouple producers from consumers, and enable multiple downstream applications (e.g., analytics, mobile notification, archival) to process the same data stream independently. Which AWS service is best suited for this message queuing and streaming requirement?Design Resilient Architectures
  23. 23.A global SaaS company is building a new microservices platform on AWS. They need a highly scalable and resilient messaging service to enable asynchronous communication between their services. The service must support fan-out messaging to multiple subscribers and guaranteed message delivery, even during outages of individual services. Which AWS service meets these requirements?Design Resilient Architectures
  24. 24.A large enterprise is migrating its on-premises data warehouse, which stores petabytes of historical sales and customer data, to AWS. The data warehouse needs to support complex analytical queries and generate business intelligence reports. It requires high performance for these analytical workloads and must be cost-effective for large-scale data storage. Which AWS service is best suited for this requirement?Design Resilient Architectures
  25. 25.An analytics company processes large datasets daily using Amazon EMR clusters. The processing is time-sensitive but can tolerate occasional interruptions to save costs. The company also needs to ensure that the data processed is consistent and durable. Which combination of AWS services should be used for the EMR cluster's compute instances and its input/output data storage?Design Resilient Architectures
  26. 26.A financial institution requires a highly available and fault-tolerant architecture for its critical transaction processing system. The system uses an Amazon RDS for PostgreSQL database. In the event of an Availability Zone (AZ) outage, the database must fail over to a standby instance with minimal data loss and disruption. Which RDS deployment option meets these requirements?Design Resilient Architectures
  27. 27.A media streaming platform uses an Amazon S3 bucket to store video assets. Due to a recent surge in traffic, users in a specific geographic region are experiencing high latency when accessing the videos. The company wants to reduce this latency and improve the user experience for these users. Which AWS service should be used to achieve this?Design Resilient Architectures
  28. 28.A media company uses Amazon S3 to store large video files that are accessed frequently for the first 30 days after upload, then occasionally for the next 90 days, and rarely thereafter for archival purposes. They need to optimize storage costs while ensuring data remains accessible according to these patterns. Which S3 storage class transition policy would be most cost-effective?Design Resilient Architectures
  29. 29.A company is running a mission-critical, multi-tier application on AWS. The application requires high availability and must be able to recover quickly from an outage in a single Availability Zone (AZ) without manual intervention. Data consistency across all tiers is paramount. Which disaster recovery strategy should the company implement?Design Resilient Architectures
  30. 30.A startup is launching a new mobile gaming application globally. They anticipate unpredictable and spiky traffic patterns, potentially reaching millions of concurrent users during peak events. The application backend consists of stateless EC2 instances and an Amazon Aurora database. To ensure the application can handle sudden increases in load without manual intervention and maintain high availability, which AWS service combination should be implemented for the EC2 instances?Design Resilient Architectures
  31. 31.A company operates a critical application that processes real-time financial transactions. The application uses a relational database. To ensure high availability and automatic failover in case of a database instance failure, the company needs to deploy the database across multiple Availability Zones within the same AWS Region. Which AWS database deployment option should be chosen?Design Resilient Architectures
  32. 32.A global media streaming platform uses Amazon S3 to store its vast catalog of video and audio content. Due to a recent surge in popularity, the platform expects significantly higher read traffic, potentially leading to performance bottlenecks for users globally. They want to improve content delivery speed and reduce the load on their S3 buckets. What is the most effective AWS service to implement for this scenario?Design Resilient Architectures
  33. 33.A company is building a new IoT platform that will ingest millions of small data points per second from connected devices globally. This data needs to be processed in real-time and then stored in a data lake for long-term analytics. The solution must be highly scalable, fault-tolerant, and capable of handling continuous high-throughput data ingestion. Which combination of AWS services should be used?Design Resilient Architectures
  34. 34.A startup is developing a new social media platform. They expect rapid user growth and need a highly scalable, fully managed database solution that can handle millions of requests per second with single-digit millisecond latency. The data model is flexible and schema-less. Which AWS database service is the most appropriate choice?Design Resilient Architectures
  35. 35.A global company needs to implement a disaster recovery (DR) strategy for its critical application, which runs on Amazon EC2 instances and an Amazon RDS for PostgreSQL database. The RTO for the application is 4 hours, and the RPO is 1 hour. They want a cost-effective solution that minimizes resources running in the DR region when not in use. Which DR strategy should they adopt?Design Resilient Architectures
  36. 36.A global SaaS company provides an application that requires millisecond-latency access to user session data across multiple AWS regions. The application uses Amazon DynamoDB for its primary data store. To provide a seamless user experience and high availability globally, the company needs to ensure that user session data is replicated and accessible quickly from the nearest region. What is the most appropriate DynamoDB feature for this requirement?Design Resilient Architectures
  37. 37.A company is developing a machine learning application that requires a highly scalable and low-latency data store for frequently accessed metadata and feature vectors. The data needs to be accessed by multiple AWS Lambda functions and Amazon EC2 instances. The application needs sub-millisecond response times for both reads and writes. Which AWS service is best suited for this purpose?Design Resilient Architectures
  38. 38.A company is building a highly available and fault-tolerant application that spans multiple AWS Regions. They need to ensure that database changes in the primary region are replicated to a secondary region with minimal latency and recovery point objective (RPO). The database is currently Amazon Aurora PostgreSQL-compatible. Which feature should be implemented?Design Resilient Architectures
  39. 39.A large enterprise is migrating its on-premises data warehouse to AWS. The data warehouse stores petabytes of historical sales data that is regularly accessed for complex analytical queries. The enterprise requires a fully managed, petabyte-scale data warehouse service that offers high performance for analytical workloads, can scale compute and storage independently, and is cost-effective. Which AWS service is the most suitable for this requirement?Design Resilient Architectures
  40. 40.A gaming company is using Amazon EC2 instances to host its game servers. During peak hours, the servers experience high CPU utilization and latency, leading to a poor user experience. The company wants to automatically adjust the number of EC2 instances based on demand to maintain optimal performance and minimize costs during off-peak hours. Which AWS service should be used to achieve this elasticity and scalability?Design Resilient Architectures
  41. 41.A global ride-sharing company needs to ensure that its application, which relies heavily on a relational database, can quickly recover from a regional outage with minimal data loss. The company has a primary Amazon RDS for PostgreSQL instance in `us-east-1`. They need a cost-effective disaster recovery solution during normal operations, but one that can be scaled up quickly to a fully operational state in a secondary region. The RPO should be in minutes, and the RTO in tens of minutes. Which disaster recovery strategy is most suitable?Design Resilient Architectures
  42. 42.A startup is developing a new serverless application using AWS Lambda functions. The application requires a high-performance, in-memory data store for caching frequently accessed data to reduce latency and database load. This cache needs to be highly available and scalable. Which AWS service should they choose?Design Resilient Architectures
  43. 43.A financial institution needs to store immutable audit logs for regulatory compliance. The logs must be protected from accidental deletion or modification for 7 years. After this period, they can be deleted. Which Amazon S3 feature should be used to meet these requirements?Design Resilient Architectures
  44. 44.A global ride-sharing company needs to ensure that its application, which relies heavily on backend microservices running on Amazon EC2, can continue operating even if an entire AWS Region becomes unavailable. The company has a Recovery Time Objective (RTO) of 4 hours and a Recovery Point Objective (RPO) of 1 hour. They want a cost-effective solution that minimizes idle infrastructure while still meeting DR objectives. Which disaster recovery strategy is most appropriate?Design Resilient Architectures
  45. 45.A company is building a new microservices application where different services need to communicate with each other asynchronously in a decoupled manner. When a critical event occurs in one service, multiple other services need to be notified and process the event independently. The company requires a simple, fully managed publish/subscribe messaging service that can deliver messages to various types of endpoints, including other AWS services. Which AWS service should be used?Design Resilient Architectures
  46. 46.A global e-commerce platform uses Amazon DynamoDB to store product catalogs and user shopping carts. The platform experiences unpredictable traffic spikes, with millions of requests per second during flash sales, followed by periods of low activity. The company needs to ensure consistent low-latency performance for all users globally, even during peak loads, without over-provisioning capacity. Which DynamoDB feature should be utilized?Design Resilient Architectures
  47. 47.A software company is developing a new serverless application using AWS Lambda functions. The application needs to store user session data that requires sub-millisecond latency for reads and writes, is frequently accessed, and needs to be highly available and scalable across multiple Availability Zones. The data is non-relational and does not require complex querying capabilities. Which AWS service is the most appropriate for storing this session data?Design Resilient Architectures
  48. 48.A data analytics company needs to process petabytes of historical data stored in Amazon S3. The processing jobs are intermittent, run for several hours, and require significant compute resources. Cost optimization is a major concern. Which compute solution would be most cost-effective and scalable for this workload?Design High-Performing Architectures
  49. 49.A media company wants to analyze user behavior on their website in real-time to personalize content and recommend products. They need a database that can handle millions of requests per second, store semi-structured data (user profiles, clickstream data), provide single-digit millisecond latency, and scale globally. The data model is flexible and evolving.Design High-Performing Architectures
  50. 50.A data analytics company processes large datasets daily, requiring high-bandwidth, low-latency network connectivity between their on-premises data center and AWS VPC. The existing internet VPN connection is insufficient for the volume of data transferred and introduces unacceptable latency. They need a dedicated, private connection that ensures consistent network performance and enhanced security.Design High-Performing Architectures