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Question

Difficulty: EasyCreate and Configure Azure Functions

You are deploying a new Azure Function App. You require a hosting plan that scales dynamically and automatically based on the number of incoming events, without requiring manual scale configuration or setting up autoscale metrics. Which of the following hosting plans meet this requirement? (Select TWO)

  1. Consumption planAnswer
  2. Elastic Premium planAnswer
  3. C
    Dedicated App Service plan
  4. D
    Basic App Service plan

Answer

The Consumption plan and Elastic Premium plan both support dynamic and automatic scaling based on the number of incoming events.
The correct hosting plans are the Consumption plan and the Elastic Premium plan. Both of these plans scale instances dynamically and automatically in response to incoming events. The Consumption plan scales down to zero when idle, while the Elastic Premium plan maintains pre-warmed instances to prevent cold starts, but both utilize the serverless scaling infrastructure.

Step-by-Step Solution

1
Analyze the scaling requirements of the scenario.
The scenario requires automatic, dynamic scaling based on event count without manual scale configuration.
This points to the serverless hosting options in Azure Functions.
2
Evaluate the hosting plans for Azure Functions.
The Consumption and Elastic Premium plans scale instances dynamically as event count increases. Dedicated or Basic App Service plans run on pre-allocated VMs and do not dynamically scale out-of-the-box based on events.
Identifying which plans provide serverless scale-out capabilities determines the correct answers.

Key Concept

Azure Functions hosting plans and their scaling capabilities.
Estimated Time:45s
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Topics

Create and Configure Azure Functions

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