DEA-C01 Data Security and Governance Practice Question
A data engineer is troubleshooting an Amazon Redshift cluster that is unable to access an S3 bucket for COPY operations. The cluster has an IAM role attached. Which of the following could be causing the failure? (Choose TWO.)
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
✓
The S3 bucket policy denies access to the IAM role
Options B and D are correct. The IAM role must have permission to the S3 bucket, and the bucket policy must allow the role. Option A is wrong because VPC security groups control network traffic, not S3 access. Option C is wrong because encryption is not required for COPY. Option E is wrong because Redshift does not need KMS permissions unless using SSE-KMS.
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 VPC security group does not allow outbound HTTPS traffic
Why it's wrong here
Security groups do not control access to S3 directly.
- ✓
The S3 bucket policy denies access to the IAM role
Why this is correct
The bucket policy can override the IAM role permissions.
- ✗
The S3 bucket has default encryption enabled
Why it's wrong here
Default encryption does not block COPY.
- ✓
The IAM role does not have the s3:GetObject permission
Why this is correct
The role needs s3:GetObject to read from S3.
- ✗
The KMS key used for encryption is not shared with Redshift
Why it's wrong here
KMS is only relevant if using SSE-KMS.
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
One of 1,711 original DEA-C01 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-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 DEA-C01 exam.