AWS Certified SysOps Administrator – Associate — Question 107
A SysOps administrator is investigating a company’s web application for performance problems. The application runs on Amazon EC2 instances that are in an Auto Scaling group. The application receives large traffic increases at random times throughout the day. During periods of rapid traffic increases, the Auto Scaling group is not adding capacity fast enough. As a result, users are experiencing poor performance.
The company wants to minimize costs without adversely affecting the user experience when web traffic surges quickly. The company needs a solution that adds more capacity to the Auto Scaling group for larger traffic increases than for smaller traffic increases.
How should the SysOps administrator configure the Auto Scaling group to meet these requirements?
Answer options
- A. Create a simple scaling policy with settings to make larger adjustments in capacity when the system is under heavy load.
- B. Create a step scaling policy with settings to make larger adjustments in capacity when the system is under heavy load.
- C. Create a target tracking scaling policy with settings to make larger adjustments in capacity when the system is under heavy load.
- D. Use Amazon EC2 Auto Scaling lifecycle hooks. Adjust the Auto Scaling group’s maximum number of instances after every scaling event.
Correct answer: B
Explanation
The correct answer is B, which suggests implementing a step scaling policy that allows for more significant capacity adjustments based on the intensity of the load. This is essential for managing sudden spikes effectively. Answers A and C propose simple and target tracking policies, which do not provide the necessary granularity for larger traffic increases, while D involves lifecycle hooks, which do not directly address the scaling requirements based on traffic patterns.