DEA-C01 Column-level security Practice Question
A company uses Amazon Redshift for its data warehouse and needs to enforce column-level security on sensitive columns. Which TWO approaches can achieve this?
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
✓
Create views that expose only non-sensitive columns and grant access to the views.
Options B and D are correct. Amazon Redshift natively supports column-level security, allowing you to grant or revoke permissions on specific columns (option D). Additionally, you can create views that include only non-sensitive columns and grant access to those views (option B), effectively achieving column-level access control. Option A (S3 bucket policy) does not control access within Redshift. Option C (Redshift Spectrum) pertains to external tables and is not a column-level security feature. Option E (row-level security) controls rows, not columns.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Apply an S3 bucket policy to the underlying data files.
Why it's wrong here
Redshift stores data in its own managed storage.
- ✓
Create views that expose only non-sensitive columns and grant access to the views.
Why this is correct
Views can limit column visibility.
- ✗
Use Redshift Spectrum to query external tables and restrict columns via the external schema.
Why it's wrong here
Redshift Spectrum is for querying S3 data, not for column-level security.
- ✓
Use Redshift column-level security to grant or revoke permissions on specific columns.
Why this is correct
Column-level security is a native Redshift feature.
- ✗
Use Redshift row-level security policies to restrict column access.
Why it's wrong here
Row-level security restricts rows, not columns.
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 |
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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.