- A
aws:RequestTag
This condition key checks tags that are included in the API request. You can require a specific tag key and value to be present on the CreateBucket request, ensuring that all buckets are tagged at creation.
- B
aws:ResourceTag
Why wrong: This condition key evaluates tags on the resource after it is created. It cannot enforce tagging at the time of creation; it can only be used to control access based on existing tags.
- C
s3:ExistingObjectTag
Why wrong: This condition key is specific to S3 objects and is used to control access based on existing object tags. It is not relevant to bucket creation.
- D
aws:TagKeys
Why wrong: This condition key checks whether specific tag keys are present in the request, but it does not verify the values. The requirement is for a specific tag key and value, so aws:RequestTag is more appropriate.
DVA-C02 Security Practice Question
This DVA-C02 practice question tests your understanding of security. 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 requires that all API calls to create an Amazon S3 bucket must include a specific tag (e.g., 'CostCenter'). Which IAM policy condition key should a developer use to enforce this requirement?
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
aws:RequestTag
Option A is correct because the `aws:RequestTag` condition key evaluates the tags that are included in the API request itself. When a developer attempts to create an S3 bucket, the IAM policy can use `aws:RequestTag` to require that a specific tag key (e.g., 'CostCenter') is present in the `CreateBucket` request. This ensures that the tag is applied at creation time, enforcing the company's tagging requirement.
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.
- ✓
aws:RequestTag
Why this is correct
This condition key checks tags that are included in the API request. You can require a specific tag key and value to be present on the CreateBucket request, ensuring that all buckets are tagged at creation.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
aws:ResourceTag
Why it's wrong here
This condition key evaluates tags on the resource after it is created. It cannot enforce tagging at the time of creation; it can only be used to control access based on existing tags.
- ✗
s3:ExistingObjectTag
Why it's wrong here
This condition key is specific to S3 objects and is used to control access based on existing object tags. It is not relevant to bucket creation.
- ✗
aws:TagKeys
Why it's wrong here
This condition key checks whether specific tag keys are present in the request, but it does not verify the values. The requirement is for a specific tag key and value, so aws:RequestTag is more appropriate.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse `aws:RequestTag` (tags in the request) with `aws:ResourceTag` (tags on an existing resource), leading them to choose the wrong condition key for enforcing tagging at resource creation.
Detailed technical explanation
How to think about this question
Under the hood, `aws:RequestTag` is evaluated against the tags passed in the `Tagging` header of the `CreateBucket` API call (which uses the REST API or SDK). The IAM policy engine checks the request parameters at the time of authorization, so if the required tag is missing, the request is denied with an `AccessDenied` error. In real-world scenarios, this is often combined with `aws:TagKeys` to both require a specific tag and restrict which keys can be used, preventing developers from bypassing the requirement with arbitrary tags.
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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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Security — This question tests Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: aws:RequestTag — Option A is correct because the `aws:RequestTag` condition key evaluates the tags that are included in the API request itself. When a developer attempts to create an S3 bucket, the IAM policy can use `aws:RequestTag` to require that a specific tag key (e.g., 'CostCenter') is present in the `CreateBucket` request. This ensures that the tag is applied at creation time, enforcing the company's tagging requirement.
What should I do if I get this DVA-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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Last reviewed: Jun 11, 2026
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