- A
Use Amazon CloudFront with the S3 bucket as origin and require HTTPS.
Why wrong: Incorrect. Amazon CloudFront with HTTPS only encrypts traffic between the client and CloudFront. The connection from CloudFront to the S3 origin may still be HTTP unless the origin is configured to require HTTPS.
- B
Create a VPC endpoint for S3 and route all traffic through it.
Why wrong: Incorrect. A VPC endpoint for S3 routes traffic through the AWS network without using the public internet, but it does not enforce encryption. Traffic can still be sent over HTTP.
- C
Enable default encryption on the S3 bucket.
Why wrong: Incorrect. Default encryption on an S3 bucket ensures data is encrypted at rest (server-side encryption), but it does not affect encryption in transit.
- D
Add a bucket policy that denies requests where aws:SecureTransport is false.
Correct. A bucket policy that denies requests when `aws:SecureTransport` is false enforces HTTPS for all traffic to the bucket, ensuring encryption in transit.
SOA-C02 aws:SecureTransport Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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. A key principle to apply: aws:SecureTransport. 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 SysOps administrator needs to ensure that all traffic to an Amazon S3 bucket is encrypted in transit. Which configuration should be used?
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
Add a bucket policy that denies requests where aws:SecureTransport is false.
Option D is correct because a bucket policy with a condition that denies requests when aws:SecureTransport is false (i.e., HTTP) enforces HTTPS for all access to the S3 bucket. Option A is incorrect because CloudFront with HTTPS only encrypts traffic between the viewer and CloudFront, not necessarily between CloudFront and S3 unless configured, and it does not enforce HTTPS for direct S3 access. Option B is incorrect because a VPC endpoint for S3 uses private IPs but does not enforce encryption in transit; it can still use HTTP. Option C is incorrect because default encryption on an S3 bucket only encrypts data at rest, not in transit.
Key principle: aws:SecureTransport
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.
Why it's wrong here
Incorrect. Amazon CloudFront with HTTPS only encrypts traffic between the client and CloudFront. The connection from CloudFront to the S3 origin may still be HTTP unless the origin is configured to require HTTPS.
- ✗
Create a VPC endpoint for S3 and route all traffic through it.
Why it's wrong here
Incorrect. A VPC endpoint for S3 routes traffic through the AWS network without using the public internet, but it does not enforce encryption. Traffic can still be sent over HTTP.
- ✗
Enable default encryption on the S3 bucket.
Why it's wrong here
Incorrect. Default encryption on an S3 bucket ensures data is encrypted at rest (server-side encryption), but it does not affect encryption in transit.
- ✓
Add a bucket policy that denies requests where aws:SecureTransport is false.
Why this is correct
Correct. A bucket policy that denies requests when `aws:SecureTransport` is false enforces HTTPS for all traffic to the bucket, ensuring encryption in transit.
Related concept
aws:SecureTransport
Common exam traps
Common exam trap: answer the scenario, not the keyword
Candidates often confuse encryption at rest (e.g., S3 default encryption) with encryption in transit. The correct mechanism for enforcing HTTPS is a bucket policy with the `aws:SecureTransport` condition.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- aws:SecureTransport
- Encryption in transit
- S3 bucket policy
- Default encryption
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
aws:SecureTransport
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.
Review aws:SecureTransport, then practise related SOA-C02 questions on the same topic to reinforce the concept.
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Networking and Content Delivery — study guide chapter
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
Networking and Content Delivery — This question tests Networking and Content Delivery — aws:SecureTransport.
What is the correct answer to this question?
The correct answer is: Add a bucket policy that denies requests where aws:SecureTransport is false. — Option D is correct because a bucket policy with a condition that denies requests when aws:SecureTransport is false (i.e., HTTP) enforces HTTPS for all access to the S3 bucket. Option A is incorrect because CloudFront with HTTPS only encrypts traffic between the viewer and CloudFront, not necessarily between CloudFront and S3 unless configured, and it does not enforce HTTPS for direct S3 access. Option B is incorrect because a VPC endpoint for S3 uses private IPs but does not enforce encryption in transit; it can still use HTTP. Option C is incorrect because default encryption on an S3 bucket only encrypts data at rest, not in transit.
What should I do if I get this SOA-C02 question wrong?
Review aws:SecureTransport, then practise related SOA-C02 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
aws:SecureTransport
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Last reviewed: Jun 20, 2026
This SOA-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 SOA-C02 exam.
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