- A
Configure the user data script to run the registration command on instance boot.
Why wrong: User data runs only at first boot; if the instance is replaced, it runs again, but there is no guarantee of order relative to Auto Scaling.
- B
Use an AWS CloudFormation template to create the instance and include the registration in the template.
Why wrong: CloudFormation is not designed to handle dynamic scaling events.
- C
Use AWS Systems Manager Run Command to register the instance after it launches.
Why wrong: Run Command requires manual or scheduled execution, not automatic at launch.
- D
Use an Auto Scaling lifecycle hook that triggers a Lambda function to perform the registration when the instance enters the 'InService' state.
Lifecycle hooks can pause instance launch and run custom actions before the instance is fully in service.
PAS-C01 Operations and Maintenance Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. 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. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
A company runs SAP on AWS and uses a distributed deployment with multiple application servers in an Auto Scaling group. They want to ensure that when a new instance is launched, it is automatically registered with the SAP Central Services instance. Which approach should they use?
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
Use an Auto Scaling lifecycle hook that triggers a Lambda function to perform the registration when the instance enters the 'InService' state.
Option C is correct because using a lifecycle hook with a custom Lambda function allows running custom actions at instance launch, such as registration with Central Services. Option A is wrong because user data runs at boot but does not wait for the instance to be fully ready for service registration. Option B is wrong because CloudFormation is for stack creation, not for ongoing Auto Scaling events. Option D is wrong because SSM Run Command is manual or scheduled, not automated at launch.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the user data script to run the registration command on instance boot.
Why it's wrong here
User data runs only at first boot; if the instance is replaced, it runs again, but there is no guarantee of order relative to Auto Scaling.
- ✗
Use an AWS CloudFormation template to create the instance and include the registration in the template.
Why it's wrong here
CloudFormation is not designed to handle dynamic scaling events.
- ✗
Use AWS Systems Manager Run Command to register the instance after it launches.
Why it's wrong here
Run Command requires manual or scheduled execution, not automatic at launch.
- ✓
Use an Auto Scaling lifecycle hook that triggers a Lambda function to perform the registration when the instance enters the 'InService' state.
Why this is correct
Lifecycle hooks can pause instance launch and run custom actions before the instance is fully in service.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
Run Command requires manual or scheduled execution, not automatic at launch.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Operations and Maintenance — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Operations and Maintenance — This question tests Operations and Maintenance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use an Auto Scaling lifecycle hook that triggers a Lambda function to perform the registration when the instance enters the 'InService' state. — Option C is correct because using a lifecycle hook with a custom Lambda function allows running custom actions at instance launch, such as registration with Central Services. Option A is wrong because user data runs at boot but does not wait for the instance to be fully ready for service registration. Option B is wrong because CloudFormation is for stack creation, not for ongoing Auto Scaling events. Option D is wrong because SSM Run Command is manual or scheduled, not automated at launch.
What should I do if I get this PAS-C01 question wrong?
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 20, 2026
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.
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