A Developer Is Creating an Auto Scaling Group Whose Instances

question 313

Multiple Choice

A Developer is creating an Auto Scaling group whose instances need to publish a custom metric to Amazon CloudWatch. Which method would be the MOST secure way to authenticate a CloudWatch PUT request?

• A) Create an IAM user with PutMetricData permission and put the user credentials in a private repository; have applications pull the credentials as needed.
• B) Create an IAM user with PutMetricData permission, and modify the Auto Scaling launch configuration to inject the user credentials into the instance user data.
• C) Modify the CloudWatch metric policies to allow the PutMetricData permission to instances from the Auto Scaling group.
• D) Create an IAM role with PutMetricData permission and modify the Auto Scaling launching configuration to launch instances using that role.

---

Definitions:

Bystander-Calculus Model

A theoretical framework suggesting that individuals go through a cognitive evaluation process in deciding whether to help in an emergency, considering costs and benefits.

Decision-Making Process

A step-by-step approach to making choices among various alternatives, involving elements such as identifying a problem, evaluating options, and selecting a course of action.

Emergency Situation

Often involves an unusual event, can vary in nature, is unplanned and requires a quick response.

Bystander-Calculus Model

A theoretical model explaining the calculations individuals make before deciding to intervene or act in emergency situations.