AWS Certified SysOps Administrator – Associate (legacy) — Question 221

You have a web application leveraging an Elastic Load Balancer (ELB) In front of the web servers deployed using an Auto Scaling Group Your database is running on Relational Database Service (RDS) The application serves out technical articles and responses to them in general there are more views of an article than there are responses to the article. On occasion, an article on the site becomes extremely popular resulting in significant traffic Increases that causes the site to go down.
What could you do to help alleviate the pressure on the infrastructure while maintaining availability during these events? (Choose three.)

Answer options

• A. Leverage CloudFront for the delivery of the articles.
• B. Add RDS read-replicas for the read traffic going to your relational database
• C. Leverage ElastiCache for caching the most frequently used data.
• D. Use SOS to queue up the requests for the technical posts and deliver them out of the queue.
• E. Use Route53 health checks to fail over to an S3 bucket for an error page.

Correct answer: A, B, C

Explanation

The correct answers, A, B, and C, help in managing high traffic loads effectively. Using CloudFront can cache static content and reduce load on the origin servers, while RDS read-replicas distribute read traffic and improve database performance. ElastiCache provides a caching layer, speeding up data retrieval. Options D and E do not directly address the traffic surge; SQS is more suited for decoupling services rather than handling traffic spikes, and Route53 health checks for a failover to an S3 bucket for an error page do not maintain site availability during high traffic.