- A
Enable CloudFront standard logging
Why wrong: Logging records requests but does not block direct S3 access.
- B
Configure Origin Access Control for the S3 origin
Origin Access Control allows CloudFront to securely access a private S3 bucket.
- C
Use an S3 bucket policy that allows access only from the CloudFront distribution
The bucket policy should trust the CloudFront distribution and deny direct public access.
- D
Enable S3 static website hosting
Why wrong: Website hosting requires public-style access patterns and does not protect the origin.
Question 25 of 1,040
SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 customer analytics portal uses CloudFront in front of an S3 origin. Which two settings help keep users from bypassing CloudFront and accessing the bucket directly?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Origin Access Control for the S3 origin
Option B is correct because Origin Access Control (OAC) is a CloudFront feature that restricts access to an S3 origin so that only the CloudFront distribution can fetch objects. When OAC is configured, CloudFront signs requests using a trusted identity, and the S3 bucket policy can then deny any request that does not come from that identity, effectively blocking direct S3 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.
- ✗
Enable CloudFront standard logging
Why it's wrong here
Logging records requests but does not block direct S3 access.
- ✓
Configure Origin Access Control for the S3 origin
Why this is correct
Origin Access Control allows CloudFront to securely access a private S3 bucket.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Use an S3 bucket policy that allows access only from the CloudFront distribution
Why this is correct
The bucket policy should trust the CloudFront distribution and deny direct public access.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable S3 static website hosting
Why it's wrong here
Website hosting requires public-style access patterns and does not protect the origin.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse CloudFront standard logging with access control, or mistakenly think enabling S3 static website hosting somehow restricts access, when in fact it opens an additional direct endpoint.
Detailed technical explanation
How to think about this question
Under the hood, OAC uses AWS Signature Version 4 to sign requests from CloudFront to S3, and the bucket policy must explicitly grant the CloudFront distribution's service principal (e.g., `cloudfront.amazonaws.com`) with a condition key like `aws:SourceArn` to lock access to a specific distribution. Without OAC, a bucket policy that allows only the CloudFront IP ranges can still be bypassed if an attacker knows the bucket name and uses a different AWS service or tool to access it.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Design Secure Architectures — This question tests Design Secure Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure Origin Access Control for the S3 origin — Option B is correct because Origin Access Control (OAC) is a CloudFront feature that restricts access to an S3 origin so that only the CloudFront distribution can fetch objects. When OAC is configured, CloudFront signs requests using a trusted identity, and the S3 bucket policy can then deny any request that does not come from that identity, effectively blocking direct S3 access.
What should I do if I get this SAA-C03 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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Last reviewed: Jun 11, 2026
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