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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: ✔ monitors backlog instead of CPU ✔ reacts instantly even to short spikes ✔ ideal for bursty workloads CPU/step scaling respond too slowly; vertical scaling takes time.

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