SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company has a multi-account strategy using AWS Organizations. They want to enforce that all newly created S3 buckets in any account have server-side encryption enabled. What is the most scalable solution?
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
✓
Apply a service control policy (SCP) that denies PutBucketEncryption with no encryption.
Using an SCP in AWS Organizations to deny creation of buckets without encryption is the most scalable solution, as it applies to all accounts in the organization. Option B is correct. Option A is per-account. Option C is reactive. Option D is not scalable across accounts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure AWS CloudFormation StackSets to deploy a bucket creation template with encryption.
Why it's wrong here
StackSets can deploy templates, but do not prevent creation of buckets outside CloudFormation.
- ✓
Apply a service control policy (SCP) that denies PutBucketEncryption with no encryption.
Why this is correct
SCPs can enforce policies across all accounts in the organization.
- ✗
Create an AWS Config rule in each account to remediate non-compliant buckets.
Why it's wrong here
AWS Config is per-account; managing rules across many accounts is less scalable.
- ✗
Use AWS CloudTrail to detect bucket creation and trigger a Lambda function to enable encryption.
Why it's wrong here
This is reactive and less scalable than preventive SCP.
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 |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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