How to Create an S3 Bucket Policy That Denies HTTP Requests
This SCS-C02 practice question tests your understanding of security logging and monitoring. 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.
Network Topology
Refer to the exhibit. An AWS Config rule checks that S3 buckets deny HTTP requests. The bucket 'my-bucket' is reported as non-compliant. Which change would make the bucket compliant?
Network Topology
A
Add a bucket policy that allows only HTTPS requests.
Why wrong: Allowing HTTPS is not enough; the rule expects a Deny for HTTP.
B
Change the Effect to Allow.
Why wrong: An Allow effect would not deny HTTP requests.
C
Add the bucket ARN to the Resource element in the policy.
The current policy only denies HTTP on objects; adding the bucket ARN (without /*) covers the bucket itself.
D
Remove the Condition element from the policy.
Why wrong: Without the condition, the Deny would block all requests, including HTTPS.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add the bucket ARN to the Resource element in the policy.
The bucket policy denies actions when 'aws:SecureTransport' is false (HTTP). However, the policy only applies to the bucket's objects (arn:aws:s3:::my-bucket/*), not to the bucket itself. To deny HTTP requests to the bucket as well, the resource should include the bucket ARN (arn:aws:s3:::my-bucket). The rule likely checks that both bucket and objects are denied.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Add a bucket policy that allows only HTTPS requests.
Why it's wrong here
Allowing HTTPS is not enough; the rule expects a Deny for HTTP.
Add the bucket ARN to the Resource element in the policy.
Why this is correct
The current policy only denies HTTP on objects; adding the bucket ARN (without /*) covers the bucket itself.
Related concept
Standard ACLs match source addresses.
✗
Remove the Condition element from the policy.
Why it's wrong here
Without the condition, the Deny would block all requests, including HTTPS.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SCS-C02 ACL questions on filtering logic and placement.
Security Logging and Monitoring — This question tests Security Logging and Monitoring — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Add the bucket ARN to the Resource element in the policy. — The bucket policy denies actions when 'aws:SecureTransport' is false (HTTP). However, the policy only applies to the bucket's objects (arn:aws:s3:::my-bucket/*), not to the bucket itself. To deny HTTP requests to the bucket as well, the resource should include the bucket ARN (arn:aws:s3:::my-bucket). The rule likely checks that both bucket and objects are denied.
What should I do if I get this SCS-C02 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related SCS-C02 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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