DBS-C01 Database Security Practice Question
A company wants to restrict access to an Amazon DynamoDB table so that only specific IAM users can read and write data. What is the BEST way to 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 an IAM policy that grants access to the DynamoDB table and attach it to the specific IAM users.
Using an IAM policy attached to specific IAM users is the most precise method to restrict access to a DynamoDB table. Resource-based policies are not supported for DynamoDB (Option A is wrong). VPC endpoints control network traffic but do not restrict which users can access the table (Option D is wrong). DynamoDB Accelerator (DAX) with IAM authentication handles caching and authentication, not table-level access control (Option C is wrong).
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 resource-based policy on the DynamoDB table.
Why it's wrong here
DynamoDB does not support resource-based policies.
- ✓
Create an IAM policy that grants access to the DynamoDB table and attach it to the specific IAM users.
Why this is correct
IAM policies are the standard way to control access to DynamoDB.
- ✗
Use DynamoDB Accelerator (DAX) with IAM authentication.
Why it's wrong here
DAX does not replace table-level access control.
- ✗
Create a VPC endpoint for DynamoDB and allow only traffic from that VPC.
Why it's wrong here
VPC endpoints control network access, not user identity.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.