mediumMultiple ChoiceObjective-mapped
AIF-C01 Practice Question: A data engineer needs to ensure that all data…
A data engineer needs to ensure that all data uploaded to an S3 bucket for SageMaker training is automatically encrypted with a customer-managed key. Which S3 feature should they enable?
⚠ Common exam trap
The AIF-C01 exam often tests the distinction between AWS managed keys and customer managed keys (CMKs) in SSE-KMS, where candidates mistakenly select an AWS managed key option when the question explicitly requires a customer-managed key.
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
✓
Default encryption with SSE-KMS using a customer managed key (CMK).
The requirement specifies a customer-managed key (CMK). Default encryption with SSE-KMS allows you to specify a CMK, ensuring all objects uploaded to the S3 bucket are automatically encrypted using that key. This satisfies the data engineer's need for control over the encryption key.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Object lock with compliance mode.
Why it's wrong here
Object Lock is for write-once-read-many, not encryption.
- ✗
Default encryption with SSE-KMS using an AWS managed key.
Why it's wrong here
AWS managed keys are not customer-managed.
- ✓
Default encryption with SSE-KMS using a customer managed key (CMK).
Why this is correct
CMK provides customer control over encryption keys.
- ✗
Default encryption with SSE-S3.
Why it's wrong here
SSE-S3 uses AWS-managed keys, not customer-managed.
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
Related to this question
About these practice questions
Courseiva writes every AIF-C01 question from scratch — 619 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AIF-C01 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 AIF-C01 exam.