AWS Certified SysOps Administrator – Associate (legacy) — Question 241

A user has created a web application with Auto Scaling. The user is regularly monitoring the application and he observed that the traffic is highest on Thursday and Friday between 8 AM to 6 PM. What is the best solution to handle scaling in this case?

Answer options

• A. Add a new instance manually by 8 AM Thursday and terminate the same by 6 PM Friday
• B. Schedule Auto Scaling to scale up by 8 AM Thursday and scale down after 6 PM on Friday
• C. Schedule a policy which may scale up every day at 8 AM and scales down by 6 PM
• D. Configure a batch process to add an instance by 8 AM and remove it by Friday 6 PM

Correct answer: B

Explanation

Option B is correct because it efficiently schedules the Auto Scaling to match the observed traffic pattern, ensuring that resources are available during peak times and reducing costs during off-peak hours. Option A is less efficient as it requires manual intervention, while Option C would scale every day, not just during peak traffic days. Option D is not practical since it introduces unnecessary complexity with a batch process instead of using the automated capabilities of Auto Scaling.