Microsoft Microsoft Certifications AZ-400 Questions & Answers

• Question 131:

  HOTSPOT

  You have an application named App1 that has a custom domain of app.contoso.com. You create a test in Azure Application Insights as shown in the following exhibit.

  

  Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic. NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: every five minutes at a random location

  Test frequency: Sets how often the test is run from each test location. With a default frequency of five minutes and five test locations, your site is tested on average every minute.

  Box 2:

  Parse dependent requests: Test requests images, scripts, style files, and other files that are part of the web page under test. The recorded response time includes the time taken to get these files. The test fails if any of these resources cannot

  be successfully downloaded within the timeout for the whole test.

  Reference:

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

• Question 132:

  HOTSPOT

  You use Azure DevOps to manage the build and deployment of an app named App1. You have a release pipeline that deploys a virtual machine named VM1. You plan to monitor the release pipeline by using Azure Monitor You need to create

  an alert to monitor the performance of VM1. The alert must be triggered when the average CPU usage exceeds 70 percent for five minutes. The alert must calculate the average once every minute.

  How should you configure the alert rule? To answer, select the appropriate options in the answer area.

  Hot Area:

  

  Correct Answer:

  

  Box 1: 5 minutes The alert must calculate the average once every minute. Note: We [Microsoft] recommend choosing an Aggregation granularity (Period) that is larger than the Frequency of evaluation, to reduce the likelihood of missing the first evaluation of added time series

  Box 2: Static

  Box 3: Greater than

  Example, say you have an App Service plan for your website. You want to monitor CPU usage on multiple instances running your web site/app. You can do that using a metric alert rule as follows:

  1.

  Target resource: myAppServicePlan

  2.

  Metric: Percentage CPU

  3.

  Condition Type: Static

  4.

  Dimensions

  5.

  Instance = InstanceName1, InstanceName2

  6.

  Time Aggregation: Average

  7.

  Period: Over the last 5 mins

  8.

  Frequency: 1 min

  9.

  Operator: GreaterThan 10.Threshold: 70 11.Like before, this rule monitors if the average CPU usage for the last 5 minutes exceeds 70%. 12.Aggregation granularity

  Reference: https://docs.microsoft.com/en-us/azure/azure-monitor/platform/alerts-metric-overview

• Question 133:

  HOTSPOT

  Your company uses Git as a source code control system for a complex app named App1.

  You plan to add a new functionality to App1.

  You need to design a branching model for the new functionality.

  Which branch lifetime and branch time should you use in the branching model? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Branch lifetime: Short-lived

  Branch type: Feature Feature branches are used when developing a new feature or enhancement which has the potential of a development lifespan longer than a single deployment. When starting development, the deployment in which this feature will be released may not be known. No matter when the feature branch will be finished, it will always be merged back into the master branch.

  References: https://gist.github.com/digitaljhelms/4287848

• Question 134:

  HOTSPOT

  You have a project in Azure DevOps that has three teams as shown in the Teams exhibit. (Click the Teams tab.)

  

  You create a new dashboard named Dash1.

  You configure the dashboard permissions for the Control project as shown in the Permissions exhibit. (Click the Permissions tab.)

  

  All other permissions have the default values set.

  For each of the following statements, select Yes if the statement is true. Otherwise, select No.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Reference: https://docs.microsoft.com/en-us/azure/devops/report/dashboards/charts-dashboard-permissions-access

• Question 135:

  HOTSPOT

  You have the Azure DevOps pipeline shown in the following exhibit.

  

  Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.

  Hot Area:

  

  Correct Answer:

  

  Box 1: 1

  The Cloud agent job only.

  Box 2: 4

  The pipelines has the four tasks: NuGet restore, Compile Application, Copy Files, and Publish Artifact.

• Question 136:

  HOTSPOT

  You have a project in Azure DevOps named Contoso App that contains pipelines in Azure Pipelines for GitHub repositories. You need to ensure that developers receive Microsoft Teams notifications when there are failures in a pipeline of

  Contoso App. What should you run in Teams?

  To answer, select the appropriate options in the answer are NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

• Question 137:

  HOTSPOT

  Your company uses GitHub for source control. GitHub repositories store source code and store process documentation. The process documentation is saved as Microsoft Word documents that contain simple flow charts stored as .bmp files. You need to optimize the integration and versioning of the process documentation and the flow charts. The solution must meet the following requirements:

  1.

  Store documents as plain text.

  2.

  Minimize the number of files that must be maintained.

  3.

  Simplify the modification, merging, and reuse of flow charts.

  4.

  Simplify the modification, merging, and reuse of documents.

  What should you include in the solution? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

• Question 138:

  HOTSPOT

  You company uses Azure DevOps to deploy infrastructures to Azure.

  Pipelines are developed by using YAML.

  You execute a pipeline and receive the results in the web portal for Azure Pipelines as shown in the following exhibit.

  

  Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Reference: https://dev.to/rajikaimal/azure-devops-ci-cd-yaml-pipeline-4glj

• Question 139:

  HOTSPOT

  You use Azure Pipelines lo manage the build and deployment of apps. You are planning the release strategies for a new app. You need to choose strategies for the following scenarios:

  1.

  Releases will be made available to users who are grouped by their tolerance for software faults.

  2.

  Code will be deployed to enable functionality that will be available in later releases of the app.

  When a new release occurs, the existing deployment will remain active to minimize recovery time if a return to the previous version is required.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Progressive exposure Continuous Delivery may sequence multiple deployment "rings" for progressive exposure (also known as "controlling the blast radius"). Progressive exposure groups users who get to try new releases to monitor their experience in "rings." The first deployment ring is often a "canary" used to test new versions in production before a broader rollout. CD automates deployment from one ring to the next and may optionally depend on an approval step, in which a decision maker signs off on the changes electronically. CD may create an auditable record of the approval in order to satisfy regulatory procedures or other control objectives.

  

  Box 2: Feature flags

  Feature flags support a customer-first DevOps mindset, to enable (expose) and disable (hide) features in a solution, even before they are complete and ready for release.

  Box 3: Blue/green

  Blue/green deployments which means that instead of replacing the previous version (here we refer to this version as blue), we bring up the new version (here referred to as the green version) next to the existing version, but not expose it to the

  actual users right away. On the condition of having successfully validated that the green version works correctly, we will promote this version to the public version by changing the routing configuration without downtime. If something is wrong

  with the green version we can revert back without users every noticing interruptions.

  Reference:

  https://docs.microsoft.com/en-us/azure/devops/learn/what-is-continuous-delivery

  https://docs.microsoft.com/en-us/azure/devops/migrate/phase-features-with-feature-flags

  https://medium.com/@denniszielke/continuous-kubernetes-blue-green-deployments-on-azure-using-nginx-appgateway-or-trafficmanager-4490bce29cb

• Question 140:

  HOTSPOT

  You plan to create alerts that will be triggered based on the page load performance of a home page.

  You have the Application Insights log query shown in the following exhibit.

  

  Use the drop-down menus to select the answer choice that completes each statement based on the information presented in the graphic.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: percentile_duration_95

  Box 2: success

  For example –

  requests

  | project name, url, success

  | where success == "False"

  This will return all the failed requests in my App Insights within the specified time range.

  Reference:

  https://devblogs.microsoft.com/premier-developer/alerts-based-on-analytics-query-using-custom-log-search/