DevOps Engineering on AWS Certification Infrastructure as Code with AWS CloudFormation

Question 1

What is the purpose of the CloudFormation `DependsOn` attribute?

Accepted Answer

To specify that one resource must be created before another

Answer

The DependsOn attribute ensures that a specific resource is created, updated, or deleted only after another resource, controlling creation order.

Question 2

Which CloudFormation section is used to pass custom values into a template at stack creation time?

Accepted Answer

Parameters

Answer

The Parameters section allows users to input custom values when creating or updating a stack, making templates reusable across environments.

Question 3

What does `cfn-signal` do in a CloudFormation deployment?

Accepted Answer

Signals CloudFormation that a resource has been successfully configured

Answer

cfn-signal is a helper script that signals CloudFormation whether a resource, like an EC2 instance, has been successfully created and configured.

Question 4

Which CloudFormation feature allows you to reuse template snippets across multiple templates?

Accepted Answer

Nested Stacks

Answer

Nested Stacks allow you to embed one CloudFormation stack inside another, enabling reuse of common template patterns and resource definitions.

Question 5

What is a CloudFormation Change Set?

Accepted Answer

A preview of the changes CloudFormation will make before executing them

Answer

A Change Set provides a summary of the proposed changes to a stack, letting you review the impact before executing an update.

DevOps Engineering on AWS Certification Practice Test