SCS-C02 Threat Detection and Incident Response Practice Question
This SCS-C02 practice question tests your understanding of threat detection and incident response. 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.
Refer to the exhibit. A security engineer is reviewing an S3 bucket policy. The policy is intended to allow access only from the corporate network (10.0.0.0/8). What is a potential security issue with this policy?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The policy allows anonymous access from the specified IP range.
Option A is correct because the policy's `Principal: "*"` element allows anonymous access from any IP address, and the `Condition` block only restricts the source IP to 10.0.0.0/8. This means any unauthenticated request originating from within the corporate network (10.0.0.0/8) is permitted, effectively granting anonymous access to the S3 bucket. The intended goal of restricting access to authenticated corporate users is not achieved, as no `aws:userid` or `aws:username` condition is enforced.
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 policy allows anonymous access from the specified IP range.
Why this is correct
Principal "*" means anyone (anonymous) can access if they meet the IP condition.
Related concept
Read the scenario before looking for a memorised answer.
✗
The policy grants access to all actions, not just GetObject.
Why it's wrong here
The Action is specifically s3:GetObject.
✗
The policy resource is incorrect; it should be the bucket ARN without the /*.
Why it's wrong here
The resource with /* is correct for objects.
✗
The policy does not include a condition to require MFA.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume an IP address condition in a bucket policy automatically implies authenticated access, but AWS explicitly allows anonymous access when `Principal: "*"` is used, even with IP restrictions.
Detailed technical explanation
How to think about this question
Under the hood, S3 bucket policies with `Principal: "*"` and an IP address condition still allow anonymous requests (requests without AWS Signature V4 signing) as long as the source IP matches. This is a common misconfiguration because engineers assume IP restriction alone implies authentication, but AWS treats anonymous requests as valid if the condition is met. In a real-world scenario, an attacker who gains physical access to the corporate network (e.g., via a compromised device) could directly download objects without any AWS credentials, bypassing IAM controls.
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.
Threat Detection and Incident Response — This question tests Threat Detection and Incident Response — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The policy allows anonymous access from the specified IP range. — Option A is correct because the policy's `Principal: "*"` element allows anonymous access from any IP address, and the `Condition` block only restricts the source IP to 10.0.0.0/8. This means any unauthenticated request originating from within the corporate network (10.0.0.0/8) is permitted, effectively granting anonymous access to the S3 bucket. The intended goal of restricting access to authenticated corporate users is not achieved, as no `aws:userid` or `aws:username` condition is enforced.
What should I do if I get this SCS-C02 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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This SCS-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SCS-C02 exam.
Question Discussion
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