SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. 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 is migrating data to Amazon S3 and requires that all objects uploaded to the bucket 'my-bucket' are encrypted with SSE-S3. The above IAM policy is attached to an IAM user. An application using the user's credentials attempts to upload an object without specifying the x-amz-server-side-encryption header. What will happen?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The upload fails because the Deny statement denies the request when encryption is not AES256.
Option C is correct. The IAM policy includes a Deny statement that denies the upload if the x-amz-server-side-encryption header is not set to AES256. Since the application does not include this header, the Deny condition is triggered and the upload fails. Option A is incorrect because the Deny statement overrides the Allow statement when the condition is met. Option B is incorrect because the scenario only involves an IAM policy, not a bucket policy. Option D is incorrect because the absence of the encryption header means the Deny statement applies, so the upload does not proceed even though SSE-S3 is the default.
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.
✗
The upload succeeds because the Allow statement grants permission.
Why it's wrong here
The Deny statement overrides the Allow when the condition is met.
✗
The upload fails because the bucket policy overrides the IAM policy.
Why it's wrong here
The IAM policy itself causes the denial, not a bucket policy.
✓
The upload fails because the Deny statement denies the request when encryption is not AES256.
Why this is correct
The Deny statement explicitly denies PutObject if encryption is not AES256, and without the header, it is considered not AES256.
Related concept
Standard ACLs match source addresses.
✗
The upload succeeds because the object is encrypted with the default SSE-S3.
Why it's wrong here
Even if default encryption is set, the IAM policy requires the header to be present; without it, the condition in Deny applies.
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 SAP-C02 ACL questions on filtering logic and placement.
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The upload fails because the Deny statement denies the request when encryption is not AES256. — Option C is correct. The IAM policy includes a Deny statement that denies the upload if the x-amz-server-side-encryption header is not set to AES256. Since the application does not include this header, the Deny condition is triggered and the upload fails. Option A is incorrect because the Deny statement overrides the Allow statement when the condition is met. Option B is incorrect because the scenario only involves an IAM policy, not a bucket policy. Option D is incorrect because the absence of the encryption header means the Deny statement applies, so the upload does not proceed even though SSE-S3 is the default.
What should I do if I get this SAP-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 SAP-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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