This SOA-C02 practice question tests your understanding of security and compliance. 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 SysOps administrator is investigating why an EC2 instance cannot access an S3 bucket using an IAM role. The instance has an associated IAM role with a policy that allows s3:GetObject on the bucket. The bucket policy also allows access from the role. However, the instance's application still gets access denied. What is the most likely cause?
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 IAM role is not associated with the instance profile used by the EC2 instance
The instance profile must be correctly attached to the EC2 instance. Option C is correct because if the role is not properly associated with the instance profile, the instance will not have the necessary credentials. Option A is wrong because the S3 endpoint is not required for access via the internet. Option B is wrong because the bucket policy allows the role. Option D is wrong because the role already has the GetObject permission.
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 IAM role does not have s3:ListBucket permission
Why it's wrong here
The application only needs GetObject; ListBucket is not required for object retrieval.
✓
The IAM role is not associated with the instance profile used by the EC2 instance
Why this is correct
If the role is not attached to the instance profile, the instance cannot assume the role and will not have permissions.
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 explicitly denies access to the role
Why it's wrong here
The scenario states the bucket policy allows access from the role.
✗
The S3 bucket is in a different region, requiring a VPC endpoint
Why it's wrong here
A VPC endpoint is not required for cross-region access; instances can access S3 over the internet.
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.
Trap categories for this question
Scenario analysis trap
The scenario states the bucket policy allows access from the role.
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 SOA-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 and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The IAM role is not associated with the instance profile used by the EC2 instance — The instance profile must be correctly attached to the EC2 instance. Option C is correct because if the role is not properly associated with the instance profile, the instance will not have the necessary credentials. Option A is wrong because the S3 endpoint is not required for access via the internet. Option B is wrong because the bucket policy allows the role. Option D is wrong because the role already has the GetObject permission.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-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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Question Discussion
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