Question 437 of 1,663
DBS-C01 Database Security Practice Question
A security engineer needs to restrict access to an Amazon DynamoDB table so that only users from a specific AWS account can read and write data. Which of the following can be used to achieve this? (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
✓
Use a VPC endpoint policy for DynamoDB.
To restrict access to a DynamoDB table from a specific AWS account, you can use a VPC endpoint policy for DynamoDB (Option A) to control access through VPC endpoints, and an IAM policy with a condition key such as 'aws:SourceAccount' (Option C) to restrict API calls to those originating from the specified account. Option B is incorrect because DynamoDB does not support resource-based policies. Option D is incorrect because security groups are used for network-level access to EC2 instances, not DynamoDB. Option E is incorrect because S3 bucket policies apply only to S3 resources, not DynamoDB.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use a VPC endpoint policy for DynamoDB.
Why this is correct
VPC endpoint policies can restrict access to DynamoDB resources.
- ✗
Use a resource-based policy on the DynamoDB table.
Why it's wrong here
DynamoDB does not support resource-based policies.
- ✓
Use an IAM policy with a condition key such as 'aws:SourceAccount'.
Why this is correct
This restricts access to a specific AWS account.
- ✗
Use a security group to restrict access to the DynamoDB table.
Why it's wrong here
Security groups are for network-level access, not DynamoDB.
- ✗
Use an S3 bucket policy to allow access to the DynamoDB table.
Why it's wrong here
S3 bucket policies do not apply to DynamoDB.
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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Last reviewed: Jun 20, 2026
This DBS-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 DBS-C01 exam.
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