CloudFormation

Question 1

What are the valid CloudFormation Parameter types?

Answer 1

String
Number: An integer or float
List<Number>
CommaDelimitedList
AWS::EC2::KeyPair::KeyName
AWS::EC2::SecurityGroup::Id
AWS::EC2::Subnet::Id
AWS::EC2::VPC::Id:
List<AWS::EC2::VPC::Id>
List<AWS::EC2::SecurityGroup::Id>
List<AWS::EC2::Subnet::Id></Number>

Question 2

What is the use of the mappings section of a CloudFormation template?

Answer 2

The Mappings section matches a key to a corresponding set of named values.

You use the Fn::FindInMap intrinsic function to retrieve values in a map.

A mapping is not a list, rather, it consists of key value pairs. You can’t include parameters, pseudo parameters, or intrinsic functions in the Mappings section.

Question 3

In a CloudFormation template, you need to select EC2 instances from a list of pre-approved instance types. How would you create this?

Answer 3

AllowedValues refers to an array containing the list of values allowed for the parameter.

Question 4

What are the CloudFormation pseudo parameters?

Answer 4

AWS::AccountId
AWS::NotificationARNs
AWS::NoValue
AWS::Partition
AWS::Region
AWS::StackId
AWS::StackName
AWS::URLSuffix

Question 5

The CloudFormation deployment package for a Lambda function.

Answer 5

• Specify the location of a container image in the Amazon ECR registry.
• Specify the location of a .zip file deployment package object in Amazon S3.
• For Node.js and Python functions, you can specify the function code inline in the template.