AWS Certified DevOps Engineer – Professional (DOP-C02) — Question 67

A company's application is currently deployed to a single AWS Region. Recently, the company opened a new office on a different continent. The users in the new office are experiencing high latency. The company's application runs on Amazon EC2 instances behind an Application Load Balancer (ALB) and uses Amazon DynamoDB as the database layer. The instances run in an EC2 Auto Scaling group across multiple Availability Zones. A DevOps engineer is tasked with minimizing application response times and improving availability for users in both Regions.
Which combination of actions should be taken to address the latency issues? (Choose three.)

Answer options

• A. Create a new DynamoDB table in the new Region with cross-Region replication enabled.
• B. Create new ALB and Auto Scaling group global resources and configure the new ALB to direct traffic to the new Auto Scaling group.
• C. Create new ALB and Auto Scaling group resources in the new Region and configure the new ALB to direct traffic to the new Auto Scaling group.
• D. Create Amazon Route 53 records, health checks, and latency-based routing policies to route to the ALB.
• E. Create Amazon Route 53 aliases, health checks, and failover routing policies to route to the ALB.
• F. Convert the DynamoDB table to a global table.

Correct answer: C, D, F

Explanation

Option C is correct because creating new resources in the new Region ensures that the application is closer to users, thereby reducing latency. Option D is also correct as it utilizes Amazon Route 53 to implement latency-based routing, directing users to the closest ALB. Option F is valid since converting the DynamoDB table to a global table enhances data availability across Regions. Options A, B, and E do not adequately address the latency issue or focus on the necessary configurations for optimal performance.