This PAS-C01 practice question tests your understanding of technology. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: cloudFormation Outputs. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Network Topology
An administrator runs the AWS CLI command shown and receives the output. The administrator wants to retrieve the private IP address of the ASCS instance using CloudFormation stack outputs. What is the most efficient way to get this IP address?
Network Topology
A
Check the CloudFormation stack events for the private IP.
Why wrong: Events do not contain resource attributes like IP.
B
Use the AWS CLI to describe the EC2 instance using the instance ID.
Why wrong: This is possible but not using CloudFormation outputs; it's a separate API call.
C
Use AWS Systems Manager to find the IP from the instance ID.
Why wrong: This is a separate service, not using CloudFormation outputs.
D
Modify the CloudFormation template to add the private IP as an output.
Adding the private IP as an output in the template is the most direct way to expose it via CloudFormation.
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.
Option D is correct because 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.
Key principle: CloudFormation Outputs
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.
Related concept
CloudFormation Outputs
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may 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.
Trap categories for this question
Command / output trap
This is possible but not using CloudFormation outputs; it's a separate API call.
Detailed technical explanation
How to think about this question
CloudFormation outputs are defined in the `Outputs` section of a template and can reference resource attributes using intrinsic functions like `Fn::GetAtt` (e.g., `!GetAtt ASCSInstance.PrivateIp`). Once the stack is created, these outputs are queryable via the `aws cloudformation describe-stacks --query "Stacks[0].Outputs"` command, which returns key-value pairs. This approach avoids the need for additional API calls to EC2 or Systems Manager, reducing latency and potential permission issues.
KKey Concepts to Remember
CloudFormation Outputs
Infrastructure as Code
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
CloudFormation Outputs
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. CloudFormation Outputs Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Review cloudFormation Outputs, then practise related PAS-C01 questions on the same topic to reinforce the concept.
Technology — This question tests Technology — CloudFormation Outputs.
What is the correct answer to this question?
The correct answer is: Modify the CloudFormation template to add the private IP as an output. — Option D is correct because 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.
What should I do if I get this PAS-C01 question wrong?
Review cloudFormation Outputs, then practise related PAS-C01 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
CloudFormation Outputs
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Question Discussion
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