The answer is a bucket policy with a condition on aws:SecureTransport, using CloudFront to enforce HTTPS, and implementing client-side encryption for all uploads. These three methods enforce encrypted connections to S3 because the bucket policy explicitly denies any HTTP requests by checking the SecureTransport boolean, CloudFront can be configured to redirect HTTP to HTTPS at the edge, and client-side encryption ensures data is encrypted before it ever leaves the client, making the transmission channel irrelevant for confidentiality. On the AWS Certified Developer Associate DVA-C02 exam, this question tests your ability to distinguish between encryption at rest (like default S3 encryption) and encryption in transit enforcement—a common trap is confusing default encryption with HTTPS enforcement, since default encryption only encrypts stored objects, not the connection. Remember the mnemonic “BCC”: Bucket policy, CloudFront, Client-side encryption—the only three ways to truly force HTTPS for S3 access.
DVA-C02 Security Practice Question
This DVA-C02 practice question tests your understanding of security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 ensure that only encrypted connections are used to access their S3 bucket. Which THREE methods can be used to enforce this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Amazon CloudFront with the S3 bucket as origin and require HTTPS.
Option A, Option C, and Option E are correct. A bucket policy with a condition on aws:SecureTransport denies HTTP. S3 Block Public Access does not enforce encryption. Default encryption sets server-side encryption but does not enforce HTTPS. CloudFront can enforce HTTPS. Client-side encryption encrypts data before sending.
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 Amazon CloudFront with the S3 bucket as origin and require HTTPS.
Read the scenario before looking for a memorised answer.
✓
Use client-side encryption for all uploads.
Why this is correct
Client-side encryption ensures data is encrypted before transmission.
Related concept
Read the scenario before looking for a memorised answer.
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 DVA-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.
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: Use Amazon CloudFront with the S3 bucket as origin and require HTTPS. — Option A, Option C, and Option E are correct. A bucket policy with a condition on aws:SecureTransport denies HTTP. S3 Block Public Access does not enforce encryption. Default encryption sets server-side encryption but does not enforce HTTPS. CloudFront can enforce HTTPS. Client-side encryption encrypts data before sending.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-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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This DVA-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 DVA-C02 exam.
Question Discussion
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