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AWS Certified Solutions Architect - Associate · AWS
Select one answer.
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Unpredictable + interruption-tolerant → Spot Unpredictable + must keep running → On-Demand
C. Use Reserved Instances for the baseline capacity and use Spot Instances to handle additional capacity. - Baseline capacity is handled by Reserved Instances, ensuring no downtime for the minimum required processing. - Spot Instances handle traffic spikes cost-effectively. Combines reliability (RIs) with cost savings (Spot) for unpredictable workloads. Recommended by AWS for workloads with variable traffic and parallel processing tasks.
Answer: C Use Reserved Instances for the steady baseline and Spot Instances for burst capacity. Cost-effective: RIs cover always-on load at discounted rates; Spots are cheapest for intermittent spikes. Continuous processing: If Spot capacity is interrupted, baseline RIs keep consumers running; the SQS queue buffers until Spot capacity returns.