DOP-C02 Configuration Management and IaC Practice Question
This DOP-C02 practice question tests your understanding of configuration management and iac. 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 uses AWS CloudFormation to manage its infrastructure. The DevOps team needs to deploy a stack that includes a Lambda function and an S3 bucket. The Lambda function's code is stored in the S3 bucket. How can the team ensure that the Lambda function is created after the S3 bucket and the code is uploaded?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use the DependsOn attribute on the Lambda function to depend on the S3 bucket.
Option D is correct because the DependsOn attribute explicitly instructs CloudFormation to create the S3 bucket before the Lambda function. Even though CloudFormation automatically determines resource dependencies for certain intrinsic functions, it does not infer dependencies based on code uploads. Using DependsOn ensures the bucket exists and the code is uploaded before the Lambda function is created, preventing a deployment failure when the Lambda references code that is not yet available.
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.
✗
Upload the code to the S3 bucket before creating the stack.
Why it's wrong here
This is a manual step, not automated.
✗
Use the Fn::GetAtt intrinsic function to retrieve the bucket name.
Why it's wrong here
Does not control creation order.
✗
Define the S3 bucket resource before the Lambda function resource in the template.
Why it's wrong here
Order in template does not control creation order.
✓
Use the DependsOn attribute on the Lambda function to depend on the S3 bucket.
Why this is correct
DependsOn ensures creation order.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume CloudFormation automatically orders resources based on template order or implicit references like Fn::GetAtt, but it does not infer dependencies from code uploads or resource definition order, so explicit DependsOn is required for non-attribute-based dependencies.
Detailed technical explanation
How to think about this question
Under the hood, CloudFormation uses a directed acyclic graph (DAG) to determine resource creation order. The DependsOn attribute adds an explicit edge in this graph, forcing sequential creation. A real-world scenario where this matters is when the Lambda function's code is uploaded via a custom resource or a separate process after the bucket is created; without DependsOn, the Lambda creation might fail with a 'Cannot access S3 object' error because the code is not yet present.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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.
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use the DependsOn attribute on the Lambda function to depend on the S3 bucket. — Option D is correct because the DependsOn attribute explicitly instructs CloudFormation to create the S3 bucket before the Lambda function. Even though CloudFormation automatically determines resource dependencies for certain intrinsic functions, it does not infer dependencies based on code uploads. Using DependsOn ensures the bucket exists and the code is uploaded before the Lambda function is created, preventing a deployment failure when the Lambda references code that is not yet available.
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.
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Question Discussion
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