- A
Block public access and enable S3 Access Points with a network origin policy
Block public access prevents public access, and S3 Access Points with network policies restrict access to authenticated requests from allowed networks.
- B
Enable S3 Object Lock and versioning
Why wrong: Object Lock prevents object deletion, but does not authenticate requests or restrict public access.
- C
Use S3 Transfer Acceleration and server-side encryption
Why wrong: Transfer Acceleration speeds up uploads, and encryption protects data at rest, but neither authenticates requests.
- D
Configure a bucket policy that allows only specific IAM users and enable MFA Delete
Why wrong: This does not prevent public access if the bucket is misconfigured with public ACLs or bucket policies.
DVA-C02 Security Practice Question
This DVA-C02 practice question tests your understanding of security. 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.
A company has an Amazon S3 bucket that stores sensitive documents. The security team wants to ensure that all GET requests to the bucket are authenticated and that the requester does not have public access. Which combination of S3 features should the developer implement?
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
Block public access and enable S3 Access Points with a network origin policy
Option A is correct because blocking public access at the bucket level ensures that no anonymous or public requests can reach the bucket, while S3 Access Points with a network origin policy restrict access to requests originating from a specific VPC or on-premises network. This combination enforces that all GET requests must be authenticated (via the Access Point's IAM policies) and cannot come from public internet sources, meeting the security team's requirements.
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.
- ✓
Block public access and enable S3 Access Points with a network origin policy
Why this is correct
Block public access prevents public access, and S3 Access Points with network policies restrict access to authenticated requests from allowed networks.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable S3 Object Lock and versioning
Why it's wrong here
Object Lock prevents object deletion, but does not authenticate requests or restrict public access.
- ✗
Use S3 Transfer Acceleration and server-side encryption
Why it's wrong here
Transfer Acceleration speeds up uploads, and encryption protects data at rest, but neither authenticates requests.
- ✗
Configure a bucket policy that allows only specific IAM users and enable MFA Delete
Why it's wrong here
This does not prevent public access if the bucket is misconfigured with public ACLs or bucket policies.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse MFA Delete or encryption with authentication controls, not realizing that only explicit public access blocking combined with network-level restrictions (like Access Points) can prevent unauthenticated GET requests.
Detailed technical explanation
How to think about this question
S3 Access Points simplify managing data access for large datasets by providing unique hostnames and dedicated policies; a network origin policy can restrict access to requests from a specific VPC using a VPC endpoint, ensuring that only traffic from that private network can reach the bucket. Block public access settings (account-level or bucket-level) override any bucket policies that would grant public access, creating a defense-in-depth approach. This setup is commonly used in regulated industries where data must remain within a corporate network and all access must be auditable via IAM.
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.
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Security — This question tests Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Block public access and enable S3 Access Points with a network origin policy — Option A is correct because blocking public access at the bucket level ensures that no anonymous or public requests can reach the bucket, while S3 Access Points with a network origin policy restrict access to requests originating from a specific VPC or on-premises network. This combination enforces that all GET requests must be authenticated (via the Access Point's IAM policies) and cannot come from public internet sources, meeting the security team's requirements.
What should I do if I get this DVA-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: Jun 11, 2026
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