AWS Certified Cloud Practitioner (CLF-C02) — Question 187

Which of the following is a way to use Amazon EC2 Auto Scaling groups to scale capacity in the AWS Cloud?

Answer options

• A. Scale the number of EC2 instances in or out automatically, based on demand.
• B. Use serverless EC2 instances.
• C. Scale the size of EC2 instances up or down automatically, based on demand.
• D. Transfer unused CPU resources between EC2 instances.

Correct answer: A

Explanation

The correct answer is A, as Amazon EC2 Auto Scaling groups are specifically designed to automatically increase or decrease the number of EC2 instances in response to demand. Option B is incorrect because EC2 instances are not serverless; serverless computing is handled by AWS Lambda. Option C is misleading because while EC2 instances can be resized, Auto Scaling primarily focuses on the number of instances rather than their size. Option D is inaccurate as EC2 auto-scaling does not involve resource transfer between instances.