SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company runs a stateless web application on EC2 instances in an Auto Scaling group. The application is deployed across multiple Availability Zones. The team notices that during a recent traffic spike, some instances were terminated and replaced, causing a temporary drop in performance. How can the team improve the resilience of the application?
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
✓
Configure a warm pool for the Auto Scaling group.
A warm pool pre-initializes instances, reducing the time needed for new instances to become ready during scale-out events. Option A is wrong because Reserved Instances guarantee capacity but do not reduce the initialization delay. Option B is wrong because lifecycle hooks can delay termination but do not accelerate instance readiness. Option C is wrong because larger instance size does not prevent the temporary drop in performance caused by instance replacement delays.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Purchase Reserved Instances to ensure capacity.
Why it's wrong here
Reserved Instances provide cost savings but not faster scaling.
- ✗
Use lifecycle hooks to wait for instance termination.
Why it's wrong here
Lifecycle hooks allow custom actions but do not speed up replacement.
- ✗
Increase the instance size to handle more traffic.
Why it's wrong here
Larger instances do not reduce the time to replace terminated instances.
- ✓
Configure a warm pool for the Auto Scaling group.
Why this is correct
Warm pools keep pre-initialized instances ready to replace terminated ones quickly.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.