The answer is enabling S3 Block Public Access at the account level and applying IAM policies. S3 Block Public Access acts as a centralized safety catch that overrides any bucket-level permissions, ensuring no data can be exposed to the internet, while IAM policies provide granular, identity-based control over who can perform specific actions on S3 objects. On the AWS Certified Security Specialty SCS-C02 exam, this pairing tests your understanding of defense in depth: one mechanism prevents accidental public exposure, the other enforces authorized user access. A common trap is confusing encryption or MFA Delete with access control—encryption protects data at rest but does not prevent unauthorized users from reading it, and MFA Delete only secures object version deletion. Remember the memory tip: “Block the public, then lock with IAM” to keep S3 data from unauthorized access.
SCS-C02 Data Protection Practice Question
This SCS-C02 practice question tests your understanding of data protection. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 company wants to protect sensitive data stored in S3 from being accessed by unauthorized users. Which TWO actions should be taken? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use IAM policies to restrict access to the bucket.
Options A and C are correct. S3 Block Public Access prevents public access, and IAM policies control access at the user/role level. Option B is incorrect because encryption does not prevent access; it protects data if accessed. Option D is incorrect because MFA Delete is for deletion protection, not access control. Option E is incorrect because Versioning does not control 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.
✓
Use IAM policies to restrict access to the bucket.
Why this is correct
IAM policies grant or deny access to S3 actions and resources.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable S3 Versioning.
Why it's wrong here
Versioning protects against overwrites and deletions, not unauthorized access.
✗
Enable default encryption on all S3 buckets.
Why it's wrong here
Encryption protects data at rest but does not prevent unauthorized access if permissions are misconfigured.
✓
Enable S3 Block Public Access at the account level.
Why this is correct
Block Public Access prevents any public access to buckets.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable MFA Delete on the bucket.
Why it's wrong here
MFA Delete prevents accidental deletion, not unauthorized access.
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.
Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use IAM policies to restrict access to the bucket. — Options A and C are correct. S3 Block Public Access prevents public access, and IAM policies control access at the user/role level. Option B is incorrect because encryption does not prevent access; it protects data if accessed. Option D is incorrect because MFA Delete is for deletion protection, not access control. Option E is incorrect because Versioning does not control access.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.