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DBS-C01 Database Security Practice Question

A company is using Amazon RDS for MySQL and wants to restrict access to the database based on the source IP address. Which AWS feature should be used 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

VPC Security Groups

Security groups act as a virtual firewall for RDS instances. You can specify inbound rules that allow traffic only from certain IP addresses or other security groups. Network ACLs are for subnets, not individual instances. IAM policies control API access, not network traffic. DB parameter groups configure database engine parameters.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • DB Parameter Groups

    Why it's wrong here

    Parameter groups do not control network access.

  • VPC Security Groups

    Why this is correct

    Security groups act as a firewall for the DB instance, controlling inbound traffic based on IP or other security groups.

  • IAM Database Authentication

    Why it's wrong here

    IAM authentication controls user access, not network-level IP restrictions.

  • Network ACLs

    Why it's wrong here

    NACLs are stateless and apply at the subnet level.

Visual reference

192.168.1.0 /24 256 addresses (254 usable) 192.168.1.0 /25 Subnet A 128 addr (126 usable) 192.168.1.128 /25 Subnet B 128 addr (126 usable) Borrowing 1 bit from host portion creates 2 subnets (/25)

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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.