AWS Certified SysOps Administrator – Associate (legacy) — Question 256

A sys admin is maintaining an application on AWS. The application is installed on EC2 and user has configured ELB and Auto Scaling. Considering future load increase, the user is planning to launch new servers proactively so that they get registered with ELB. How can the user add these instances with Auto Scaling?

Answer options

• A. Increase the desired capacity of the Auto Scaling group
• B. Increase the maximum limit of the Auto Scaling group
• C. Launch an instance manually and register it with ELB on the fly
• D. Decrease the minimum limit of the Auto Scaling group

Correct answer: A

Explanation

The correct answer is A because increasing the desired capacity of the Auto Scaling group allows it to launch new instances proactively based on future load predictions. Option B is incorrect as it only adjusts the maximum limit without affecting the current capacity. Option C is not ideal since manually launching instances does not utilize Auto Scaling's automation. Option D is also incorrect because decreasing the minimum limit would reduce the number of instances rather than add them.