PAS-C01 CloudFormation Outputs Practice Question
Network Topology
An administrator needs to retrieve the private IP address of an ASCS instance that was deployed via AWS CloudFormation. What is the most efficient way to get this IP address?
⚠ Common exam trap
Candidates often assume retrieving the private IP from the EC2 instance directly (via describe-instances or Systems Manager) is simpler, but they overlook that CloudFormation outputs are specifically designed to expose such values efficiently and are the recommended practice for infrastructure-as-code workflows.
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
✓
Modify the CloudFormation template to add the private IP as an output.
CloudFormation stack outputs are the intended mechanism for exposing resource attributes, such as private IP addresses, after stack creation. By modifying the template to include the private IP as an output, the administrator can retrieve it directly via the AWS CLI `describe-stacks` command without additional API calls or manual lookups, making it the most efficient and automated approach.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Check the CloudFormation stack events for the private IP.
Why it's wrong here
Events do not contain resource attributes like IP.
- ✗
Use the AWS CLI to describe the EC2 instance using the instance ID.
Why it's wrong here
This is possible but not using CloudFormation outputs; it's a separate API call.
- ✗
Use AWS Systems Manager to find the IP from the instance ID.
Why it's wrong here
This is a separate service, not using CloudFormation outputs.
- ✓
Modify the CloudFormation template to add the private IP as an output.
Why this is correct
Adding the private IP as an output in the template is the most direct way to expose it via CloudFormation.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-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 PAS-C01 exam.