The answer is Amazon CloudWatch with EC2 Auto Recovery, as this service directly monitors the health of an EC2 instance and can automatically restart a failed ASCS instance in the same Availability Zone without manual intervention. CloudWatch uses status checks to detect instance impairment and triggers a recovery action that stops and starts the instance, preserving its private IP, Elastic IP, and EBS attachments—critical for SAP NetWeaver’s ASCS role. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of native AWS recovery mechanisms versus more complex alternatives; a common trap is choosing AWS Lambda or Auto Scaling, but remember that CloudWatch Auto Recovery is the simplest, built-in method for single-instance recovery without additional code or scaling group configuration. For a quick memory tip, think “CloudWatch watches, Auto Recovery recovers” to distinguish it from ELB (load balancing) or Lambda (custom scripting).
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is running SAP NetWeaver on AWS and wants to implement high availability for the ASCS instance. Which AWS service can be used to monitor and automatically restart the ASCS instance if it fails?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon CloudWatch with EC2 Auto Recovery
Option B is correct because Amazon CloudWatch can monitor instance status and trigger an Auto Recovery action to restart the instance in the same Availability Zone. Option A is wrong because ELB is for traffic distribution, not instance recovery. Option C is wrong because Lambda can perform actions but not directly restart instances without additional setup; CloudWatch Auto Recovery is simpler. Option D is wrong because EC2 Auto Scaling is for scaling groups, not single instance recovery.
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.
✗
EC2 Auto Scaling group
Why it's wrong here
Auto Scaling is for scaling, not recovery of a single instance.
✗
AWS Lambda with a scheduled function
Why it's wrong here
Lambda can be used but is more complex; CloudWatch Auto Recovery is the native solution.
✗
Elastic Load Balancing (ELB)
Why it's wrong here
ELB distributes traffic, does not restart instances.
✓
Amazon CloudWatch with EC2 Auto Recovery
Why this is correct
CloudWatch can detect instance failure and automatically recover the instance.
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.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon CloudWatch with EC2 Auto Recovery — Option B is correct because Amazon CloudWatch can monitor instance status and trigger an Auto Recovery action to restart the instance in the same Availability Zone. Option A is wrong because ELB is for traffic distribution, not instance recovery. Option C is wrong because Lambda can perform actions but not directly restart instances without additional setup; CloudWatch Auto Recovery is simpler. Option D is wrong because EC2 Auto Scaling is for scaling groups, not single instance recovery.
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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Question Discussion
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