DBS-C01 IAM database authentication Practice Question
Which THREE methods can be used to authenticate users to an Amazon RDS for MySQL DB instance? (Choose three.)
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
✓
MySQL native password authentication.
Options B, D, and E are correct. MySQL native password authentication (B) is the standard method. Kerberos authentication (D) is supported for RDS for MySQL. IAM database authentication (E) allows IAM users and roles to authenticate to the DB instance using an authentication token. Option A is incorrect because AWS Managed Microsoft AD authentication is not supported for RDS for MySQL; it is supported for RDS for SQL Server and Oracle. Option C is incorrect because Lambda is not an authentication method; it is a compute service that cannot directly authenticate users to a database.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Managed Microsoft AD authentication.
Why it's wrong here
Not supported for MySQL; supported for SQL Server and Oracle.
- ✓
MySQL native password authentication.
Why this is correct
Standard MySQL authentication.
- ✗
AWS Lambda function authentication.
Why it's wrong here
Lambda is not an authentication method.
- ✓
Kerberos authentication.
Why this is correct
Supported for RDS for MySQL.
- ✓
IAM database authentication.
Why this is correct
Allows IAM users to authenticate.
Visual reference
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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