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DVA-C02 CloudFormation Question Bank (26 Questions)

Browse all 26 practice questions covering AWS CloudFormation for the DVA-C02 certification exam. Answers are intentionally hidden on this page so you can self-test first before checking results in quiz mode.

Question 1Deployment
A developer uses AWS SAM to define a serverless application. Which CloudFormation transform is required in the template?
AAWS::CloudFormation::Transform
BAWS::Serverless-2016-10-31
CAWS::Lambda::Transform
DAWS::SAM::Application
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Question 2Deployment
A developer needs to pass sensitive configuration values to a CloudFormation stack without storing them in the template. Which parameter type should they use?
AString parameter with NoEcho: true
BAWS::SSM::Parameter::Value::String referencing a Parameter Store SecureString
CEmbedded Secrets Manager ARN
DLambda-backed custom resource
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Question 3Deployment
A developer wants to deploy a CloudFormation stack across multiple accounts and regions from a single template. Which feature handles this?
ACloudFormation Nested Stacks
BCloudFormation StackSets
CCloudFormation Cross-Stack References
DCloudFormation Macros
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Question 4Deployment
A developer uses CloudFormation Nested Stacks. The root stack creates child stacks. What is a key operational consideration?
AChild stacks cannot have outputs
BChanges to the root stack template do not propagate to child stacks
CDeleting the root stack also deletes all child stacks
DChild stacks must be in the same region
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Question 5Deployment
A developer uses CloudFormation. A Lambda function requires the ARN of an SNS topic created in the same template. Which method is MOST appropriate?
AHardcode a placeholder ARN
BUse Ref (for SNS topic ARN) or Fn::GetAtt in the Lambda environment variables
CCreate the SNS topic in a separate stack
DUse a CloudFormation mapping with the ARN
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Question 6Deployment
A team needs to deploy the same application stack to multiple AWS regions with different configurations per region. Which CloudFormation approach is most appropriate?
ACreate separate templates for each region
BUse CloudFormation StackSets with parameter overrides per region
CManually provision resources in each region
DUse a single stack with conditional resources
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Question 7Troubleshooting and Optimization
A developer wants to check if a CloudFormation stack drift has occurred (resources changed outside of CloudFormation). Which feature detects this?
ACloudFormation change sets
BCloudFormation drift detection
CAWS Config
DCloudTrail event analysis
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Question 8Deployment
A developer uses SAM and wants to include shared infrastructure (e.g., a VPC) defined in a separate CloudFormation stack. Which SAM/CloudFormation feature is used?
ASAM nested applications
BCloudFormation cross-stack references with Fn::ImportValue
CCloudFormation StackSets
DSAM global settings
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Question 9Deployment
A developer uses CloudFormation to create a Lambda function. The function needs the ARN of an SQS queue created in the same stack. How should they reference it?
AHardcode the SQS queue ARN
BUse Fn::GetAtt: [MySQSQueue, Arn]
CUse a CloudFormation Mapping
DUse a Parameter for the SQS ARN
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Question 10Deployment
Which AWS CDK command synthesizes a CDK app into a CloudFormation template?
Acdk deploy
Bcdk diff
Ccdk synth
Dcdk bootstrap
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Question 11Deployment
A CloudFormation template creates an S3 bucket. A developer wants to prevent accidental deletion. Which CloudFormation attribute enables this?
ADeletionPolicy: Retain
BUpdateReplacePolicy: Delete
CDependsOn: S3Bucket
DDeletionPolicy: Snapshot
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Question 12Deployment
A developer uses CloudFormation to deploy an ECS service. The task definition references an ECR image. How should the image tag be managed in the template?
AUse 'latest' tag always
BUse a specific image tag or digest, or use a CloudFormation parameter for the tag
CUse the ECR repository URI without a tag
DUse a Lambda custom resource to get the latest tag
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Question 13Troubleshooting and Optimization
A developer wants to verify that a CloudFormation template change will not replace or delete critical resources before deploying. Which feature provides this?
ACloudFormation drift detection
BCloudFormation change sets
CCloudFormation stack policies
DCloudFormation rollback triggers
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Question 14Deployment
A developer wants to test a CloudFormation change set before executing it. Which feature shows the exact diff between current and proposed resource states?
ACloudFormation drift detection
BCloudFormation change set with detailed change information
CCDK diff
DAWS Config rule evaluation
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Question 15Deployment
A CloudFormation stack update fails. What does CloudFormation do by default?
ALeaves the stack in a FAILED state
BRolls back to the previous successful state
CDeletes the entire stack
DSkips the failed resource and continues
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Question 16Deployment
A developer uses CloudFormation cross-stack references. Which functions allow exporting and importing values between stacks?
AFn::GetAtt and Fn::Sub
BOutputs with Export and Fn::ImportValue
CParameters and Ref
DMappings and Conditions
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Question 17Deployment
A CloudFormation stack fails to create due to a missing IAM permission. The developer fixes the permission and re-runs the deployment. What does CloudFormation do with resources created before the failure?
ALeaves them as-is from the first attempt
BRolls them back, then re-creates all resources in the new attempt
CSkips re-creating them since they already exist
DDeletes the stack and requires a fresh deployment
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Question 18Deployment
A developer uses CloudFormation and wants to execute custom provisioning logic during stack create/update. Which resource type allows this?
ACloudFormation Macro
BAWS::CloudFormation::CustomResource backed by Lambda
CCloudFormation StackSet
DCloudFormation drift detection
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Question 19Deployment
A CloudFormation stack needs to create resources in a specific order. Resource B depends on Resource A's ARN. How should this dependency be expressed?
AUse CreationPolicy on Resource B
BUse DependsOn attribute on Resource B, or use Ref/Fn::GetAtt which implicitly creates dependencies
CUse a WaitCondition
DUse Mappings section
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Question 20Deployment
Which CloudFormation resource enables a developer to wait for an EC2 instance to complete initialization (e.g., run user data scripts) before the stack proceeds?
AAWS::CloudFormation::WaitCondition with a WaitConditionHandle
BCreationPolicy on the EC2 instance with cfn-signal
CDependsOn with a sleep parameter
DAWS::CloudFormation::Init
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Question 21Deployment
A developer uses CloudFormation and wants to deploy an RDS instance. Which DeletionPolicy protects against accidental data loss if the stack is deleted?
ADeletionPolicy: Delete
BDeletionPolicy: Retain
CDeletionPolicy: Snapshot
DDeletionPolicy: Backup
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Question 22Deployment
A developer wants to prevent certain CloudFormation resources from being deleted when a stack is updated. Which resource attribute provides this protection?
AUpdateReplacePolicy: Retain
BDeletionPolicy: Retain
CMetadata: DeletionProtection
DCreationPolicy
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Question 23Deployment
A developer uses CloudFormation to update a stack. The update requires replacing an EC2 instance. How can the developer minimize disruption?
AUse a change set and review the replacement before applying
BUpdate the stack without reviewing
CDelete and recreate the stack
DUse cfn-init to update in place
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Question 24Deployment
A developer creates a SAM template with an API Gateway and Lambda. After deployment, they update only the Lambda function code. What is the FASTEST way to redeploy?
Asam deploy
Bsam sync --code (deploys only the code change, bypassing CloudFormation)
Caws cloudformation update-stack
DManually zip and upload to Lambda
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Question 25Deployment
A developer builds a microservices application. Each service has its own CloudFormation stack. How should they manage shared infrastructure like a VPC?
ADuplicate the VPC definition in each stack
BCreate a shared infrastructure stack and export the VPC/subnet IDs for other stacks to import
CUse CloudFormation StackSets for the VPC
DHardcode VPC IDs in each stack's parameters
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Question 26Select All That ApplyDeployment
A developer uses AWS SAM and wants to define environment-specific settings (dev vs prod) without changing the template. Which SAM feature supports this?
ASAM Globals
BSAM configuration file (samconfig.toml) with multiple environments
CSAM Policy Templates
DCloudFormation parameter overrides in sam deploy
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Key CloudFormation Concepts for DVA-C02

cloudformationtemplatestackchange setnested stackdriftcustom resourcesamiac

DVA-C02 CloudFormation Exam Tips

AWS CloudFormation questions in DVA-C02 are typically scenario-based. Focus on application development patterns, event-driven integration, and secure coding on AWS. Priority concepts: cloudformation, template, stack, change set, nested stack, drift.

What DVA-C02 Expects

Anchor your answer in select developer-friendly managed services and patterns that minimize custom undifferentiated code.
CloudFormation scenarios for DVA-C02 are frequently mapped to Domain 3 (24%), so read the objective carefully before picking controls or architecture.
Expect multi-topic scenarios where CloudFormation interacts with IAM, networking, storage, or observability patterns rather than appearing as an isolated question.
When two options are both technically valid, prefer the choice that best aligns with the exam's operational scope (Associate) and vendor best practices.

High-Value CloudFormation Concepts

Know the core CloudFormation building blocks cold: cloudformation, template, stack, change set.
Review the edge-case features and limits for nested stack, drift; these details are commonly used to differentiate answer choices.
Practice service-integration reasoning: how CloudFormation pairs with SAM, CDK, Elastic Beanstalk in real deployment patterns.
For DVA-C02, explain why the chosen CloudFormation design meets reliability, security, and cost expectations better than the alternatives.

Common DVA-C02 Traps

Watch for using infrastructure-centric answers instead of application-centric ones.
Questions in Deployment often include distractors that look correct for CloudFormation but violate least-privilege, durability, or availability requirements.
Avoid picking options purely by feature name; validate data path, failure handling, and governance impact before answering.
If the prompt hints at automation or repeatability, eliminate manual-only operational answers first.

Fast Review Checklist

Can you compare at least two CloudFormation implementation paths and justify which one best fits the scenario?
Can you map the chosen answer back to Deployment (24%) outcomes for DVA-C02?
Can you explain security and access boundaries for CloudFormation without relying on default-open assumptions?
Can you describe how CloudFormation integrates with SAM and CDK during failure, scaling, and monitoring events?

Exam Domains Covering CloudFormation

Domain 3Deployment24%

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