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AZ-400 · Question #322

You configure Azure Application Insights and the shared service plan tier for a web app. You enable Smart Detection. You confirm that standard metrics are visible in the logs, but when you test a fail

The correct answer is B. Smart Detection uses the first 24 hours to establish the normal behavior of the web app.. After setting up Application Insights for your project, and if your app generates a certain minimum amount of data, Smart Detection of failure anomalies takes 24 hours to learn the normal behavior of your app, before it is switched on and can send alerts. https://docs.microsoft.c

Submitted by kwame.gh· Mar 6, 2026Implement an instrumentation strategy

Question

You configure Azure Application Insights and the shared service plan tier for a web app. You enable Smart Detection. You confirm that standard metrics are visible in the logs, but when you test a failure, you do not receive a Smart Detection notification What prevents the Smart Detection notification from being sent?

Options

  • AYou must restart the web app before Smart Detection is enabled.
  • BSmart Detection uses the first 24 hours to establish the normal behavior of the web app.
  • CYou must enable the Snapshot Debugger for the web app.
  • DThe web app is configured to use the shared service plan tier.

How the community answered

(36 responses)
  • A
    3% (1)
  • B
    86% (31)
  • C
    6% (2)
  • D
    6% (2)

Explanation

After setting up Application Insights for your project, and if your app generates a certain minimum amount of data, Smart Detection of failure anomalies takes 24 hours to learn the normal behavior of your app, before it is switched on and can send alerts. https://docs.microsoft.com/en-us/azure/azure-monitor/app/proactive-failure-diagnostics

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