This SCS-C02 practice question tests your understanding of infrastructure security. 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.
Exhibit
Refer to the exhibit.
Resource Record Set:
Name: www.example.com.
Type: A
Alias: Yes
Alias Target: d1234.cloudfront.net.
A company configures a Route 53 alias record to point to a CloudFront distribution. The security team wants to ensure that users can only access the website via CloudFront and not directly via the S3 bucket origin. What additional configuration is needed?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an Origin Access Control (OAC) for the S3 bucket origin
Option C is correct because an Origin Access Control (OAC) prevents direct access to the S3 bucket. Option A is wrong because the alias record already points to CloudFront. Option B is wrong because CloudFront signed URLs are for user authentication, not origin access. Option D is wrong because security groups are for EC2, not S3.
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.
✓
Create an Origin Access Control (OAC) for the S3 bucket origin
Why this is correct
OAC ensures only CloudFront can access the S3 bucket.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a Route 53 health check to verify CloudFront availability
Why it's wrong here
Health checks do not prevent direct access to the origin.
✗
Configure CloudFront signed URLs to restrict access
Why it's wrong here
Signed URLs control user access, not origin access.
✗
Attach a security group to the S3 bucket
Why it's wrong here
Security groups cannot be attached to S3 buckets.
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 SCS-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.
Infrastructure Security — This question tests Infrastructure Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an Origin Access Control (OAC) for the S3 bucket origin — Option C is correct because an Origin Access Control (OAC) prevents direct access to the S3 bucket. Option A is wrong because the alias record already points to CloudFront. Option B is wrong because CloudFront signed URLs are for user authentication, not origin access. Option D is wrong because security groups are for EC2, not S3.
What should I do if I get this SCS-C02 question wrong?
Identify which SCS-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.
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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