SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. 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.
A e-learning platform uses CloudFront in front of an S3 origin. Which two settings help keep users from bypassing CloudFront and accessing the bucket directly?
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
Origin Access Control (OAC) is the recommended way to restrict access to an S3 bucket so that it only accepts requests from a specific CloudFront distribution. By configuring OAC, CloudFront signs requests to S3 using a trusted identity, and the bucket policy denies any direct access that does not include that signature, effectively preventing users from bypassing 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.
✗
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.
✗
Enable S3 static website hosting
Why it's wrong here
Website hosting requires public-style access patterns and does not protect the origin.
✓
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.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often think enabling logging or static website hosting somehow restricts access, when in fact only a properly configured bucket policy combined with OAC (or OAI) can enforce that all traffic goes through CloudFront.
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. The bucket policy must include a condition that allows access only when the `aws:SourceArn` matches the CloudFront distribution ARN, ensuring that even if someone discovers the bucket URL, the request lacks the required signature and is denied. This mechanism replaces the older Origin Access Identity (OAI) and provides stronger security by supporting features like cross-region replication and SSE-KMS.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 — Origin Access Control (OAC) is the recommended way to restrict access to an S3 bucket so that it only accepts requests from a specific CloudFront distribution. By configuring OAC, CloudFront signs requests to S3 using a trusted identity, and the bucket policy denies any direct access that does not include that signature, effectively preventing users from bypassing CloudFront.
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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Question Discussion
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