SCS-C02 Identity and Access Management Practice Question
This SCS-C02 practice question tests your understanding of identity and access management. 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 has an S3 bucket that contains sensitive data. The security team wants to ensure that all access to the bucket is encrypted in transit. What is the most effective way 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
✓
Add a bucket policy that denies access if the request does not use HTTPS (aws:SecureTransport condition).
Option B is correct because a bucket policy with a condition aws:SecureTransport ensures only HTTPS requests are allowed. Option A is wrong because enabling default encryption only encrypts at rest, not in transit. Option C is wrong because CloudTrail logs do not enforce encryption. Option D is wrong because IAM policy can deny non-HTTPS but it's better to enforce at the bucket level.
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.
✗
Enable default encryption on the S3 bucket using SSE-S3.
Why it's wrong here
Default encryption encrypts data at rest, not in transit.
✗
Enable AWS CloudTrail to log all S3 access and alert on non-HTTPS requests.
Why it's wrong here
Logging does not enforce encryption.
✓
Add a bucket policy that denies access if the request does not use HTTPS (aws:SecureTransport condition).
Create an IAM policy that denies S3 actions without the condition aws:SecureTransport.
Why it's wrong here
IAM policy can also enforce this, but bucket policy is more direct.
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.
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.
Identity and Access Management — This question tests Identity and Access Management — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Add a bucket policy that denies access if the request does not use HTTPS (aws:SecureTransport condition). — Option B is correct because a bucket policy with a condition aws:SecureTransport ensures only HTTPS requests are allowed. Option A is wrong because enabling default encryption only encrypts at rest, not in transit. Option C is wrong because CloudTrail logs do not enforce encryption. Option D is wrong because IAM policy can deny non-HTTPS but it's better to enforce at the bucket level.
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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Question Discussion
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