CV0-004 Operations and Support Practice Question
A cloud engineer is configuring auto-scaling for a web application. The scaling policy should add 2 instances when CPU utilization exceeds 80% for 5 consecutive minutes and remove 1 instance when CPU drops below 50% for 10 minutes. Which type of scaling policy should they use?
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
✓
Step scaling policy
Step scaling allows adding or removing a specific number of instances based on the size of the alarm breach. Target tracking adjusts to maintain a target metric value. Simple scaling is older and less flexible. Scheduled scaling is time-based.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Scheduled scaling policy
Why it's wrong here
Scheduled scaling is time-based, not metric-based.
- ✗
Target tracking scaling policy
Why it's wrong here
Target tracking adjusts capacity to maintain a target metric value; it doesn't allow fixed step additions.
- ✗
Simple scaling policy
Why it's wrong here
Simple scaling is a single adjustment per alarm, but it is less flexible and not recommended.
- ✓
Step scaling policy
Why this is correct
Step scaling allows defined steps (add/remove specific numbers) based on metric thresholds.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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