This DVA-C02 practice question tests your understanding of security. 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 developer needs to share an S3 bucket with a third-party AWS account. The third-party will upload files to the bucket using their own IAM users. The developer creates a bucket policy that grants s3:PutObject to the third-party account's root user. However, the third-party reports that their IAM users cannot upload files. What is the MOST likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The third-party's IAM users do not have an IAM policy allowing s3:PutObject.
Option A is correct because the bucket policy grants access to the root user, but the IAM users also need explicit permissions from their own account via an IAM policy. Option B is wrong because the bucket policy is not missing a condition; it's a permissions issue. Option C is wrong because the bucket policy grants PutObject to the root, but not to the users. Option D is wrong because S3 does not require user creation in the owning account for cross-account access.
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 third-party's IAM users do not have an IAM policy allowing s3:PutObject.
Why this is correct
Cross-account access requires permissions from both sides.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The bucket policy must include a condition requiring encryption.
Why it's wrong here
No encryption condition is needed for basic upload.
✗
The bucket policy should grant access to the IAM user ARN instead of the root user.
Why it's wrong here
The policy can grant to root, but users still need their own permissions.
✗
The developer must create IAM users in their own account for the third-party.
Why it's wrong here
That would be insecure and not scalable.
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 DVA-C02 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.
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: The third-party's IAM users do not have an IAM policy allowing s3:PutObject. — Option A is correct because the bucket policy grants access to the root user, but the IAM users also need explicit permissions from their own account via an IAM policy. Option B is wrong because the bucket policy is not missing a condition; it's a permissions issue. Option C is wrong because the bucket policy grants PutObject to the root, but not to the users. Option D is wrong because S3 does not require user creation in the owning account for cross-account access.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 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: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DVA-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 DVA-C02 exam.
Question Discussion
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