The answer is the IP condition in the bucket policy, because CloudFront requests originate from CloudFront’s own IP addresses, not the end user’s IP. When a bucket policy uses a condition like `IpAddress` to restrict access to a specific range such as 192.0.2.0/24, CloudFront’s edge servers will fail that check, causing Access Denied errors even though the user’s actual IP might be valid. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of how CloudFront interacts with S3 origin access—specifically that the source IP seen by S3 is always the CloudFront edge IP, not the client. A common trap is assuming the bucket policy can filter by user IP when CloudFront is in front; instead, you must use CloudFront functions or WAF for IP-based restrictions. Memory tip: CloudFront stands between the user and S3, so the bucket policy sees CloudFront’s face, not the user’s.
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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.
Refer to the exhibit. This bucket policy is attached to an S3 bucket that is used as an origin for a CloudFront distribution. Users are reporting Access Denied errors when accessing objects via the CloudFront URL. 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 condition restricts access to a specific IP range, but CloudFront requests come from its own IP addresses.
Option A is correct because when CloudFront is used to access S3, the source IP is the CloudFront edge IP, not the user's IP. The condition restricts to 192.0.2.0/24, which will not match. Option B is wrong because the bucket policy does not need to grant access to the CloudFront service principal; it can use Origin Access Identity (OAI) but not required. Option C is wrong because the resource ARN includes /*, which is correct. Option D is wrong because the condition is not missing; it's present but incorrect for CloudFront.
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 condition is missing the aws:SourceVpce condition for VPC endpoints.
Why it's wrong here
This condition is irrelevant for CloudFront access.
✗
The bucket policy does not grant access to the CloudFront service principal.
Why it's wrong here
CloudFront can access S3 via OAI without needing a service principal in the bucket policy.
✗
The resource ARN is missing the bucket ARN for the bucket itself.
Why it's wrong here
The resource ARN includes all objects; it is correct.
✓
The condition restricts access to a specific IP range, but CloudFront requests come from its own IP addresses.
Why this is correct
CloudFront uses its own IP addresses to fetch objects from the origin; the user's IP is not forwarded by default.
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.
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 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.
Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The condition restricts access to a specific IP range, but CloudFront requests come from its own IP addresses. — Option A is correct because when CloudFront is used to access S3, the source IP is the CloudFront edge IP, not the user's IP. The condition restricts to 192.0.2.0/24, which will not match. Option B is wrong because the bucket policy does not need to grant access to the CloudFront service principal; it can use Origin Access Identity (OAI) but not required. Option C is wrong because the resource ARN includes /*, which is correct. Option D is wrong because the condition is not missing; it's present but incorrect for CloudFront.
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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