- A
Use a lifecycle hook with a Lambda function that runs a script to register the instance with the SAP load balancer.
Lifecycle hooks are designed for this purpose, allowing custom actions during instance launch/termination.
- B
Modify the AMI to include a startup script that registers the instance with the SAP load balancer.
Why wrong: Startup scripts may fail to execute before the instance becomes healthy, and there is no coordination with Auto Scaling.
- C
Configure the Auto Scaling group to use an Elastic Load Balancer target group, and set health checks.
Why wrong: ELB integration automatically registers instances, but not with SAP's own load balancer; it's for AWS ELB.
- D
Use an AWS Lambda function triggered by a CloudWatch Events rule for EC2 instance state changes to register the instance.
Why wrong: This would work but is more complex and less reliable than lifecycle hooks.
Quick Answer
The answer is to use a lifecycle hook with a Lambda function that runs a script to register the instance with the SAP load balancer. This is correct because lifecycle hooks pause the Auto Scaling group’s launch process at a defined transition point—such as after the instance enters the “InService” state—allowing a custom action, like a Lambda function, to execute registration logic before the instance is marked healthy and receives traffic. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of how to auto-register SAP instances with a load balancer using ASG lifecycle hooks, a common requirement for SAP systems that rely on specific application-level registration rather than simple target group attachment. A frequent trap is assuming the EC2 instance’s user data alone can handle registration, but user data runs asynchronously and may not complete before the instance is considered healthy. Memory tip: think of the lifecycle hook as a “pause button” that lets Lambda “introduce” the instance to the load balancer before it goes live.
PAS-C01 Operations and Maintenance Practice Question
This PAS-C01 practice question tests your understanding of operations and maintenance. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An SAP system is running on EC2 instances in an Auto Scaling group. The operations team needs to ensure that when a new instance is launched, it is automatically registered with the SAP Application Server's load balancer. Which approach should be used?
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 a lifecycle hook with a Lambda function that runs a script to register the instance with the SAP load balancer.
Lifecycle hooks allow the Auto Scaling group to pause instance launch and run custom actions (via Lambda) to register the instance with the load balancer before it becomes healthy.
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.
- ✓
Use a lifecycle hook with a Lambda function that runs a script to register the instance with the SAP load balancer.
Why this is correct
Lifecycle hooks are designed for this purpose, allowing custom actions during instance launch/termination.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Modify the AMI to include a startup script that registers the instance with the SAP load balancer.
Why it's wrong here
Startup scripts may fail to execute before the instance becomes healthy, and there is no coordination with Auto Scaling.
- ✗
Configure the Auto Scaling group to use an Elastic Load Balancer target group, and set health checks.
Why it's wrong here
ELB integration automatically registers instances, but not with SAP's own load balancer; it's for AWS ELB.
- ✗
Use an AWS Lambda function triggered by a CloudWatch Events rule for EC2 instance state changes to register the instance.
Why it's wrong here
This would work but is more complex and less reliable than lifecycle hooks.
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.
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.
- →
Operations and Maintenance — study guide chapter
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Operations and Maintenance practice 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 a lifecycle hook with a Lambda function that runs a script to register the instance with the SAP load balancer. — Lifecycle hooks allow the Auto Scaling group to pause instance launch and run custom actions (via Lambda) to register the instance with the load balancer before it becomes healthy.
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.
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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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