DVA-C02 Question #720: Real Exam Question with Answer & Explanation

Question

A company hosts the frontend of an application on Amazon EC2 instances in an Auto Scaling group behind an Application Load Balancer (ALB). The company configured the Auto Scaling group to scale based on CPU usage. The instances use an Amazon RDS database for persistent data storage. The capacity of the EC2 instances is sufficient, and network latency is low. However, users report slow response times and delays in notifications during traffic surges. The company needs to improve application performance. The company wants a solution that does not require advanced features or significant changes to the application architecture. Which solution will meet these requirements with the LEAST configuration effort?

Options

• AUse Amazon ElastiCache (Memcached) to cache frequently accessed data.
• BImplement dynamic scaling by using a target tracking scaling policy based on a predefined
• CMigrate the database to Amazon DynamoDB. Create a DynamoDB Accelerator (DAX).
• DUse Amazon ElastiCache (Redis OSS) to cache frequently accessed data.

Explanation

Using Amazon ElastiCache with Memcached to cache frequently accessed data improves application response times during traffic surges with minimal changes and configuration effort. Memcached is simple to deploy and integrate without requiring advanced features or architectural

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