- A
Enable default encryption with SSE-S3 or SSE-KMS.
Encrypts objects at rest.
- B
Block all public access using the S3 Block Public Access feature.
Prevents public access to the bucket.
- C
Enable S3 Transfer Acceleration.
Why wrong: Transfer Acceleration improves speed, not security.
- D
Configure a lifecycle policy to transition objects to Glacier.
Why wrong: Lifecycle policies are for storage management, not security.
- E
Enable S3 Select to filter data.
Why wrong: S3 Select is a data retrieval feature, not security.
Question 959 of 1,746
SAP-C02 Practice Question: Design Solutions for Organizational Complexity
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. 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.
Which TWO actions improve the security of an S3 bucket that stores sensitive data?
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
✓
Enable default encryption with SSE-S3 or SSE-KMS.
Enabling default encryption with SSE-S3 or SSE-KMS ensures that all objects written to the S3 bucket are automatically encrypted at rest, protecting sensitive data even if the uploader does not explicitly request encryption. This is a foundational security control that mitigates the risk of data exposure due to misconfigured uploads or accidental storage of unencrypted data.
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 default encryption with SSE-S3 or SSE-KMS.
Why this is correct
Encrypts objects at rest.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Block all public access using the S3 Block Public Access feature.
Why this is correct
Prevents public access to the bucket.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable S3 Transfer Acceleration.
Why it's wrong here
Transfer Acceleration improves speed, not security.
- ✗
Configure a lifecycle policy to transition objects to Glacier.
Why it's wrong here
Lifecycle policies are for storage management, not security.
- ✗
Enable S3 Select to filter data.
Why it's wrong here
S3 Select is a data retrieval feature, not security.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse performance or cost features (Transfer Acceleration, Glacier lifecycle, S3 Select) with security controls, leading them to select options that do not actually protect data confidentiality or integrity.
Detailed technical explanation
How to think about this question
Default encryption applies server-side encryption (SSE-S3 using AES-256 or SSE-KMS with a customer-managed KMS key) at the bucket level, automatically encrypting all PUT requests that do not specify encryption headers. Under the hood, S3 intercepts the request and applies encryption before writing to disk, and the decryption happens transparently on GET requests. In a real-world scenario, if a developer forgets to set the x-amz-server-side-encryption header, default encryption ensures the data is still protected, which is critical for compliance with regulations like HIPAA or PCI DSS.
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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Design Solutions for Organizational Complexity — study guide chapter
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable default encryption with SSE-S3 or SSE-KMS. — Enabling default encryption with SSE-S3 or SSE-KMS ensures that all objects written to the S3 bucket are automatically encrypted at rest, protecting sensitive data even if the uploader does not explicitly request encryption. This is a foundational security control that mitigates the risk of data exposure due to misconfigured uploads or accidental storage of unencrypted data.
What should I do if I get this SAP-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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Last reviewed: Jul 4, 2026
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