This DEA-C01 practice question tests your understanding of data store management. 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 data engineer applies the above IAM policy to a user. The user attempts to upload an object to the bucket 'my-data-lake' without specifying server-side encryption. What will happen?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The upload fails because the condition requires encryption
The IAM policy includes a condition that requires the `s3:x-amz-server-side-encryption` header to be present with a value of `AES256`. When the user attempts to upload an object without specifying server-side encryption, the condition is not satisfied, so the `s3:PutObject` permission is denied. This causes the upload to fail, regardless of any bucket default encryption settings or bucket policies.
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.
✗
The upload fails only if the bucket has a default encryption setting
Why it's wrong here
Default encryption applies to S3, but the IAM policy denies based on condition.
✗
The upload succeeds if the bucket policy allows unencrypted uploads
Why it's wrong here
IAM policy is evaluated; bucket policy not shown.
✗
The upload succeeds because the policy allows s3:PutObject
Why it's wrong here
The policy allows only if the condition is met; condition fails.
✓
The upload fails because the condition requires encryption
Why this is correct
The condition requires AES256 encryption; not provided.
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 bucket default encryption automatically satisfies an IAM condition requiring the encryption header, but the condition checks the request headers, not the bucket's configuration.
Trap categories for this question
Command / output trap
IAM policy is evaluated; bucket policy not shown.
Detailed technical explanation
How to think about this question
IAM policy conditions are evaluated before the action is allowed; the `s3:x-amz-server-side-encryption` condition key checks the request header, not the bucket's default encryption. If the bucket had a default encryption setting, the upload would still fail because the request itself lacks the header—AWS does not automatically add the header based on bucket defaults. This is a common pitfall when combining IAM policies with bucket default encryption.
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.
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The upload fails because the condition requires encryption — The IAM policy includes a condition that requires the `s3:x-amz-server-side-encryption` header to be present with a value of `AES256`. When the user attempts to upload an object without specifying server-side encryption, the condition is not satisfied, so the `s3:PutObject` permission is denied. This causes the upload to fail, regardless of any bucket default encryption settings or bucket policies.
What should I do if I get this DEA-C01 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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