easyMultiple ChoiceObjective-mapped
CV0-004 Practice Question: A startup is deploying its web application in the…
A startup is deploying its web application in the cloud using an auto-scaling group. The application experiences variable traffic, with spikes during business hours. The team has configured the auto-scaling group to scale out when CPU utilization exceeds 70% and scale in when it drops below 30%. However, during a sudden spike, the new instances take over 5 minutes to become healthy, causing slow response times. What should the team do to improve responsiveness?
⚠ Common exam trap
The trap here is that candidates often focus on tuning thresholds or instance sizes to fix a latency problem, missing that the core issue is the reactive scaling delay, which only a proactive approach like predictive scaling can resolve.
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
✓
Implement a predictive scaling policy based on historical patterns.
Predictive scaling uses historical traffic patterns to proactively launch instances before CPU utilization spikes, eliminating the 5-minute lag from reactive scaling. This approach anticipates the business-hour surge and ensures capacity is ready when demand increases, directly addressing the slow response time issue.
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 larger instance type for the auto-scaling group.
Why it's wrong here
Larger instances handle more load but still have startup delay.
- ✓
Implement a predictive scaling policy based on historical patterns.
Why this is correct
Predictive scaling provisions instances ahead of anticipated spikes.
- ✗
Reduce the threshold for scale-out to 50% CPU.
Why it's wrong here
Earlier scaling triggers but still faces the 5-minute startup delay.
- ✗
Increase the cooldown period for the scaling policy.
Why it's wrong here
Longer cooldown delays scaling, making responsiveness worse.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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