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  3. AZ-400

Microsoft AZ-400 Exam (page: 11)
Microsoft Designing and Implementing DevOps Solutions
Updated on: 02-Mar-2026

Viewing Page 11 of 65
AZ-400 PDF 510 Questions

You configure an Azure Application Insights availability test.

You need to notify the customer services department at your company by email when availability is degraded. You create an Azure logic app that will handle the email and follow up actions.
Which type of trigger should you use to invoke the logic app?

  1. an HTTPWebhook trigger
  2. an HTTP trigger
  3. a Request trigger
  4. an ApiConnection trigger

Answer(s): C

Explanation:

You can use webhooks to route an Azure alert notification to other systems for post-processing or custom actions. You can use a webhook on an alert to route it to services that send SMS messages, to log bugs, to notify a team via chat or messaging services, or for various other actions.


Reference:

https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-webhooks



You have an Azure DevOps organization named Contoso and an Azure subscription.

You use Azure DevOps to build a containerized app named App1 and deploy App1 to an Azure container instance named ACI1. You need to restart ACI1 when App1 stops responding.
What should you do?

  1. Add a liveness probe to the YAML configuration of App1.
  2. Add a readiness probe to the YAML configuration of App1.
  3. Use Connection Monitor in Azure Network Watcher.
  4. Use IP flow verify in Azure Network Watcher.

Answer(s): A

Explanation:

For containerized applications that serve traffic, you might want to verify that your container is ready to handle incoming requests. Azure Container Instances supports readiness probes to include configurations so that your container can't be accessed under certain conditions. The readiness probe behaves like a Kubernetes readiness probe. For example, a container app might need to load a large data set during startup, and you don't want it to receive requests during this time.
YAML is used to setup a liveness probe.


Reference:

https://docs.microsoft.com/en-us/azure/container-instances/container-instances-readiness-probe



You have a multi-tier application that has an Azure Web Apps front end and an Azure SQL Database back end.

You need to recommend a solution to capture and store telemetry data. The solution must meet the following requirements:
-Support using ad-hoc queries to identify baselines.
-Trigger alerts when metrics in the baseline are exceeded.
-Store application and database metrics in a central location.

What should you include in the recommendation?

  1. Azure Event Hubs
  2. Azure SQL Database Intelligent Insights
  3. Azure Application Insights
  4. Azure Log Analytics

Answer(s): D

Explanation:

Azure Platform as a Service (PaaS) resources, like Azure SQL and Web Sites (Web Apps), can emit performance metrics data natively to Log Analytics.
The Premium plan will retain up to 12 months of data, giving you an excellent baseline ability.
There are two options available in the Azure portal for analyzing data stored in Log analytics and for creating queries for ad hoc analysis.

Incorrect Answers:
B: Intelligent Insights analyzes database performance by comparing the database workload from the last hour with the past seven-day baseline workload. However, we need handle application metrics as well.


Reference:

https://docs.microsoft.com/en-us/azure/azure-monitor/platform/collect-azurepass-posh



You have an Azure DevOps organization named Contoso and an Azure subscription. The subscription contains an Azure virtual machine scale set named VMSS1 that is configured for autoscaling.

You use Azure DevOps to build a web app named App1 and deploy App1 to VMSS1. App1 is used heavily and has usage patterns that vary on a weekly basis.

You need to recommend a solution to detect an abnormal rise in the rate of failed requests to App1. The solution must minimize administrative effort. What should you include in the recommendation?

  1. the Smart Detection feature in Azure Application Insights
  2. the Failures feature in Azure Application Insights
  3. an Azure Service Health alert
  4. an Azure Monitor alert that uses an Azure Log Analytics query

Answer(s): A

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.


Reference:

https://docs.microsoft.com/en-us/azure/azure-monitor/app/proactive-failure-diagnostics



SIMULATION
You need to ensure that Microsoft Visual Studio 2017 can remotely attach to an Azure Function named fa-11566895.
To complete this task, sign in to the Microsoft Azure portal.

  1. See Explanation section for answer.

Answer(s): A

Explanation:

Enable Remote Debugging
Before we start a debugging session to our Azure Function app we need to enable the functionality.

Navigate in the Azure portal to your function app fa-11566895 Go to the “Application settings”
Under “Debugging” set Remote Debugging to On and set Remote Visual Studio version to 2017.


Reference:

https://www.locktar.nl/uncategorized/azure-remote-debugging-manually-in-visual-studio-2017/



You have an Azure subscription that contains resources in several resource groups.
You need to design a monitoring strategy that will provide a consolidated view. The solution must support the following requirements:

-Support role-based access control (RBAC) by using Azure Active Directory (Azure AD) identifies.
-Include visuals from Azure Monitor that are generated by using the Kusto query language.
-Support documentation written in markdown.
-Use the latest data available for each visual.

What should you use to create the consolidated view?

  1. Azure Monitor
  2. Microsoft Power BI
  3. Azure Data Explorer
  4. Azure dashboards

Answer(s): D


Reference:

https://docs.microsoft.com/en-us/azure/azure-portal/azure-portal-dashboards



You are automating the testing process for your company. You need to automate UI testing of a web application.
Which framework should you use?

  1. JaCoco
  2. Selenium
  3. Xamarin.UITest
  4. Microsoft.CodeAnalysis

Answer(s): B

Explanation:

Performing user interface (UI) testing as part of the release pipeline is a great way of detecting unexpected changes, and need not be difficult. Selenium can be used to test your website during a continuous deployment release and test automation.


Reference:

https://docs.microsoft.com/en-us/azure/devops/pipelines/test/continuous-test-selenium?view=azure-devops



You are building an ASP.NET Core application.
You plan to create an application utilization baseline by capturing telemetry data.

You need to add code to the application to capture the telemetry data. The solution must minimize the costs of storing the telemetry data. Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point

  1. Add the <InitialSamplingPercentage>99</InitialSamplingPercentage> parameter to the ApplicationInsights.config file.
  2. From the code of the application, enable adaptive sampling.
  3. From the code of the application, add Azure Application Insights telemetry.
  4. Add the <MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond> parameter to the ApplicationInsights.config file.
  5. From the code of the application, disable adaptive sampling.

Answer(s): C,E

Explanation:

Sampling is a feature in Azure Application Insights. It is the recommended way to reduce telemetry traffic, data costs, and storage costs, while preserving a statistically correct analysis of application data.

The Application Insights SDK for ASP.NET Core supports both fixed-rate and adaptive sampling. Adaptive sampling is enabled by default.

D: For adaptive sampling: The volume is adjusted automatically to keep within a specified maximum rate of traffic, and is controlled via the setting MaxTelemetryItemsPerSecond. If the application produces a low amount of telemetry, such as when debugging or due to low usage, items won't be dropped by the sampling processor as long as volume is below MaxTelemetryItemsPerSecond.

Note: In ApplicationInsights.config, you can adjust several parameters in the AdaptiveSamplingTelemetryProcessor node. The figures shown are the default values:
<MaxTelemetryItemsPerSecond>5</MaxTelemetryItemsPerSecond>


Reference:

https://docs.microsoft.com/en-us/azure/azure-monitor/app/sampling



Viewing Page 11 of 65



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