The answer is to verify that the bucket policy uses the 'aws:SourceVpc' condition key with the correct VPC ID. This is because the 'aws:SourceVpce' key restricts traffic to a specific VPC endpoint, not the entire VPC, so using the wrong key allows requests from any IP outside the VPC if they don’t go through that endpoint. On the AWS Certified Data Engineer Associate DEA-C01 exam, this tests your understanding of S3 bucket policy condition keys for network restrictions, a common trap where candidates confuse endpoint-specific and VPC-wide conditions. A key memory tip: think "VPC" for the whole network and "VPCe" for the endpoint—the extra 'e' means it’s only for the endpoint, not the full VPC.
DEA-C01 Data Security and Governance Practice Question
This DEA-C01 practice question tests your understanding of data security and governance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 media company stores video files in an Amazon S3 bucket. The bucket policy allows access only from a specific VPC. The company has enabled S3 Server Access Logs to monitor access. Recently, the security team found that some requests were coming from an IP address outside the allowed VPC. They suspect that the bucket policy may have an incorrect condition. What should they check first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Verify that the bucket policy uses the 'aws:SourceVpc' condition key with the correct VPC ID.
Option A is correct because the 'aws:SourceVpce' condition key is used to restrict access to a specific VPC endpoint, not the VPC itself. To restrict to a VPC, they should use 'aws:SourceVpc'. Option B is wrong because the bucket policy already restricts access; the issue is with the condition key used. Option C is wrong because S3 Server Access Logs show the source IP, but the condition key is the root cause. Option D is wrong because IAM policies are evaluated in addition to bucket policies, but the bucket policy condition is likely the issue.
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.
✓
Verify that the bucket policy uses the 'aws:SourceVpc' condition key with the correct VPC ID.
Why this is correct
The 'aws:SourceVpc' condition key restricts access to requests originating from the specified VPC.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Review the S3 Server Access Logs to identify the source IP addresses.
Why it's wrong here
This identifies the issue but does not fix the condition key mistake.
✗
Ensure that the IAM role used by the application has the correct permissions.
Why it's wrong here
The bucket policy condition is the likely misconfiguration.
✗
Check if the bucket policy allows public access.
Why it's wrong here
The bucket policy restricts to VPC, but the condition might be incorrect.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Verify that the bucket policy uses the 'aws:SourceVpc' condition key with the correct VPC ID. — Option A is correct because the 'aws:SourceVpce' condition key is used to restrict access to a specific VPC endpoint, not the VPC itself. To restrict to a VPC, they should use 'aws:SourceVpc'. Option B is wrong because the bucket policy already restricts access; the issue is with the condition key used. Option C is wrong because S3 Server Access Logs show the source IP, but the condition key is the root cause. Option D is wrong because IAM policies are evaluated in addition to bucket policies, but the bucket policy condition is likely the issue.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
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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