PAS-C01 Operations and Maintenance Practice Question
A company is running SAP on AWS and wants to automatically recover an unhealthy EC2 instance that hosts their SAP application. Which AWS feature should they configure to automatically restart the instance in the same Availability Zone if it fails?
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
✓
EC2 Auto Recovery
(EC2 Auto Recovery) is correct because EC2 Auto Recovery automatically recovers an impaired EC2 instance in the same Availability Zone, which matches the requirement. Option A is wrong because a Cluster Placement Group is a logical grouping of instances within a single AZ to achieve low-latency network performance, not for automatic recovery. Option B is wrong because an Auto Scaling group is used for scaling and replacing instances based on demand, but it may launch instances in different AZs, not necessarily the same AZ. Option D is wrong because a Lifecycle Hook is used to perform custom actions when instances are launched or terminated by Auto Scaling, not for automatic recovery of a single instance.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cluster Placement Group
Why it's wrong here
Placement group is for network performance, not recovery.
- ✗
Auto Scaling group
Why it's wrong here
Auto Scaling replaces instances but may launch in a different AZ.
- ✓
EC2 Auto Recovery
Why this is correct
Auto Recovery restarts the same instance in the same AZ.
- ✗
Lifecycle Hook
Why it's wrong here
Lifecycle hooks pause instances during scaling, not for auto recovery.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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