Microsoft Azure Fundamentals AZ-900 Practice Question
During a flash-sale event, an online retailer experiences an unexpected surge in website traffic. How does Azure's scalability feature help the retailer maintain application performance?
It automatically adds additional compute resources when demand rises, then removes them when demand falls.
It requires the retailer to purchase Reserved Virtual Machine capacity months before the event.
It distributes the existing workload across multiple availability zones without changing total capacity.
It keeps twice the expected peak capacity running at all times, regardless of actual demand.
Azure autoscale can automatically add compute (or other) instances when metrics such as CPU or queue length exceed defined thresholds, ensuring the application continues to respond even under a sudden traffic surge. Spreading resources across availability zones improves fault tolerance but does not add capacity, purchasing reserved instances locks in pricing but does not dynamically scale, and permanently over-provisioning resources is costly and wasteful.
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Microsoft Azure Fundamentals AZ-900
Cloud Concepts
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