- A
Use AWS Service Catalog to enforce tagging on all products.
Why wrong: Service Catalog can enforce tagging but is meant for end-user product provisioning, not direct CloudFormation stacks.
- B
Create an AWS Config rule to detect untagged resources and trigger auto-remediation.
Why wrong: Config rules are detective and reactive; they do not prevent untagged resources from being created.
- C
Specify the tag in the CloudFormation stack's Tags parameter, which applies the tag to all resources in the stack.
Stack-level tags are automatically applied to all resources that support tagging during creation.
- D
Use a custom Lambda function as a CloudFormation hook to tag resources after creation.
Why wrong: This is an after-the-fact approach and adds complexity; native stack tags are simpler.
DOP-C02 Security and Compliance Practice Question
This DOP-C02 practice question tests your understanding of security and compliance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is using AWS CloudFormation to deploy infrastructure. They need to ensure that all resources created by CloudFormation are tagged with a 'CostCenter' tag. The tag must be applied automatically to all resources in the stack. What should they do?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Specify the tag in the CloudFormation stack's Tags parameter, which applies the tag to all resources in the stack.
Option C is correct because CloudFormation allows you to specify stack-level tags in the Tags parameter when creating or updating a stack. These tags are automatically propagated to all resources that support tagging within the stack, ensuring consistent cost allocation without additional custom logic or post-creation remediation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS Service Catalog to enforce tagging on all products.
Why it's wrong here
Service Catalog can enforce tagging but is meant for end-user product provisioning, not direct CloudFormation stacks.
- ✗
Create an AWS Config rule to detect untagged resources and trigger auto-remediation.
Why it's wrong here
Config rules are detective and reactive; they do not prevent untagged resources from being created.
- ✓
Specify the tag in the CloudFormation stack's Tags parameter, which applies the tag to all resources in the stack.
Why this is correct
Stack-level tags are automatically applied to all resources that support tagging during creation.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a custom Lambda function as a CloudFormation hook to tag resources after creation.
Why it's wrong here
This is an after-the-fact approach and adds complexity; native stack tags are simpler.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often over-engineer the solution by choosing a reactive or custom approach (like AWS Config rules or Lambda hooks) when CloudFormation provides a built-in, declarative mechanism to apply tags automatically at stack creation time.
Detailed technical explanation
How to think about this question
When you specify tags in the CloudFormation stack's Tags parameter, CloudFormation propagates those tags to all resources in the stack that support tagging, including EC2 instances, S3 buckets, and RDS databases. This propagation happens at resource creation time, ensuring that tags are present from the moment the resource exists, which is critical for cost tracking and compliance. The Tags parameter is defined at the stack level and is inherited by resources that have the 'PropagateAtLaunch' or similar attribute set to true, covering the vast majority of AWS resource types.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Security and Compliance — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Specify the tag in the CloudFormation stack's Tags parameter, which applies the tag to all resources in the stack. — Option C is correct because CloudFormation allows you to specify stack-level tags in the Tags parameter when creating or updating a stack. These tags are automatically propagated to all resources that support tagging within the stack, ensuring consistent cost allocation without additional custom logic or post-creation remediation.
What should I do if I get this DOP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 24, 2026
This DOP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DOP-C02 exam.
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