PAS-C01 Operations and Maintenance Practice Question
An SAP on AWS environment includes multiple instances across Availability Zones. The operations team needs to automatically replace an unhealthy EC2 instance that is part of an SAP application cluster. Which AWS service can automatically detect and replace the instance based on health checks?
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
✓
Auto Scaling group
An Auto Scaling group with health checks can automatically detect and replace unhealthy EC2 instances. This is commonly used for SAP applications to maintain high availability across Availability Zones. Option A is incorrect because Elastic Load Balancing distributes traffic but does not replace instances. Option B is incorrect because AWS Systems Manager Automation can automate maintenance tasks but does not automatically replace instances based on health checks. Option D is incorrect because Amazon CloudWatch alarms can notify on health status but do not automatically replace instances.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Elastic Load Balancing
Why it's wrong here
ELB does not replace instances.
- ✗
AWS Systems Manager Automation
Why it's wrong here
Automation runs scripts, does not replace instances automatically.
- ✓
Auto Scaling group
Why this is correct
Auto Scaling replaces unhealthy instances based on health checks.
- ✗
Amazon CloudWatch alarms
Why it's wrong here
Alarms only trigger notifications or actions, not instance replacement.
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JA
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.