SAP-C02 Question 192
Select 2Your company is expanding its global operations and needs to deploy a highly available web application for customers in North America, Europe, and Asia. The application must minimize latency for users in each region and remain resilient even if an entire AWS Region becomes unavailable. Which approach leverages AWS Global Infrastructure to meet these requirements?
- A
Deploy the application across multiple Availability Zones (AZs) within a single AWS Region and use Amazon CloudFront for content delivery.
- B
Deploy the application in multiple AWS Regions, use Route 53 with latency-based routing, and replicate data across Regions using Amazon S3 Cross-Region Replication.
- C
Deploy the application in a single AWS Region, use an Elastic Load Balancer to distribute traffic across multiple AZs, and enable Multi-AZ failover for the database.
- D
Deploy the application in multiple AWS Regions, use Route 53 with geolocation-based routing, and replicate the data using Amazon DynamoDB Global Tables.
- E
Deploy the application in multiple AWS Regions, use AWS Global Accelerator, and replicate data using Amazon S3 with Transfer Acceleration.
Show answer and explanation
Correct answers: B, D
Explanation
To achieve high availability and low latency for global users, the application must be deployed in multiple AWS Regions. Route 53 with latency-based or geolocation-based routing ensures users are directed to the closest Region, minimizing latency. Data replication (via S3 Cross-Region Replication or DynamoDB Global Tables) ensures resilience and consistency across Regions. Options 2 and 4 meet all these requirements, providing both low latency and fault tolerance.
- A. Incorrect.
This option only uses a single AWS Region, which does not provide resilience against a Region failure. While Amazon CloudFront can reduce latency for content delivery, it does not address application-level redundancy across Regions.
- B. Correct.
This option utilizes multiple AWS Regions, Route 53 with latency-based routing for directing users to the nearest Region, and Amazon S3 Cross-Region Replication for data consistency. This approach ensures low latency and fault tolerance across Regions.
- C. Incorrect.
This option is limited to a single AWS Region and does not provide resilience against a Region-wide failure. Multi-AZ failover improves database availability but does not address global latency or disaster recovery needs.
- D. Correct.
This option leverages multiple AWS Regions for high availability, Route 53 with geolocation-based routing to direct users based on their location, and DynamoDB Global Tables for data replication, ensuring low latency and fault tolerance.
- E. Incorrect.
This option uses AWS Global Accelerator for improved global user performance, but Amazon S3 with Transfer Acceleration is not designed for application data replication or providing fault-tolerant architectures.