[Solved] Given this step scaling policy snippet:{ "PolicyType": "StepScaling", "StepAdjustments": [ {"MetricIntervalLowerBound": 0, "ScalingAdjustment": 1}, {"MetricIntervalLowerBound":... | AWS

AWS - Auto Scaling

Given this step scaling policy snippet:

{
  "PolicyType": "StepScaling",
  "StepAdjustments": [
    {"MetricIntervalLowerBound": 0, "ScalingAdjustment": 1},
    {"MetricIntervalLowerBound": 10, "ScalingAdjustment": 2}
  ]
}

If the metric increases by 12 units, how many instances will be added?

A0

B1

C3

D2

Step-by-Step Solution

Solution:

Step 1: Understand step adjustments
Each step defines scaling for metric intervals. For metric increase of 12, check which intervals apply.
Step 2: Find matching step
12 is >=10, so the second step applies with ScalingAdjustment 2.
Final Answer:
2 -> Option D
Quick Check:
Metric 12 >= 10 -> add 2 instances [OK]

Quick Trick: Metric value matches highest lower bound step [OK]

Common Mistakes:

Adding adjustments from both steps
Choosing the first step only
Ignoring metric intervals

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Given this step scaling policy snippet:

Step 1: Understand step adjustments

Step 2: Find matching step

Final Answer:

Quick Check:

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