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      Question

      A cloud app experiences sudden spikes for a short period

      (10–15 seconds). Traditional CPU-based auto-scaling is too slow. Which method is MOST effective?
      A Scheduled scaling Correct Answer Incorrect Answer
      B Step scaling Correct Answer Incorrect Answer
      C Target tracking scaling Correct Answer Incorrect Answer
      D Request-queue (SQS/Kafka) based scaling Correct Answer Incorrect Answer
      E Vertical scaling Correct Answer Incorrect Answer

      Solution

      Explanation: Queue-based scaling: βœ” monitors backlog instead of CPU βœ” reacts instantly even to short spikes βœ” ideal for bursty workloads CPU/step scaling respond too slowly; vertical scaling takes time.

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