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AWS Solutions Architect Associate (SAA-C03) · Free practice question 4 of 12

Scheduled scaling for predictable peaks

Traffic to the payroll portal at Kellerman Services rises sharply every weekday at 8:00 AM and falls at 6:00 PM, following the same pattern every week. Reactive scaling adds instances too slowly, so employees see slow responses in the first minutes of each morning. What should a solutions architect configure for the Auto Scaling group?

  1. A.A step scaling policy with a lower CPU alarm threshold
  2. B.A longer health check grace period
  3. C.Scheduled scaling actions that raise capacity shortly before 8:00 AM and lower it after 6:00 PM on weekdays
  4. D.A larger default instance warmup value
Show answer and explanation

Correct answer: C. Scheduled scaling actions that raise capacity shortly before 8:00 AM and lower it after 6:00 PM on weekdays

Why: Scheduled scaling changes capacity at specified times, so the group can scale out before a known daily surge instead of reacting to it. A lower alarm threshold still reacts after load begins, and health check grace periods and warmup settings affect how new instances are evaluated rather than when they are launched.

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