Microsoft AZ-204 Online Practice Questions and Exam Preparation

Microsoft AZ-204 Online Questions & Answers

• Question 11:

  HOTSPOT

  You develop an application that sells AI generated images based on user input. You recently started a marketing campaign that displays unique ads every second day.

  Sales data is stored in Azure Cosmos DB with the date of each sale being stored in a property named 'whenFinished'.

  The marketing department requires a view that shows the number of sales for each unique ad.

  You need to implement the query for the view.

  How should you complete the query? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  

  

  ---

  Box 1: count(c.whenFinished)

  The marketing department requires a view that shows the number of sales for each unique ad.

  The COUNT (Azure Cosmos DB) system function returns the count of the values in the expression.

  Box 2: DateTimeBin(c.whenFinished,'day',2)

  Sales data is stored in Azure Cosmos DB with the date of each sale being stored in a property named 'whenFinished'.

  There is a new system function which can be used do group by on datetime values called DateTimeBin().

  Please note that if you are projecting the group by value you will need to write the function twice as you can't refer to aliased columns in a group by.

  SELECT avg(dataValue) as Value, DateTimeBin(c.actionDateTime, 'd') AS Date

  FROM c GROUP BY DateTimeBin(c.actionDateTime, 'd')

  Box 3: DateTimeBin(c.whenFinished,'day',2)

  Note: DateTimeBin (Azure Cosmos DB) returns the nearest multiple ofBinSizebelowthe specified DateTime given the unit of measurement DateTimePart and start value of BinAtDateTime.

  Syntax: DateTimeBin (<DateTime> , <DateTimePart> [,BinSize] [,BinAtDateTime])

  Where BinSize (optional) Numeric value that specifies the size of bins. If not specified, the default value is one.

  https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/aggregate-count

  https://learn.microsoft.com/en-us/answers/questions/928787/how-to-query-cosmos-to-group-items-by-time.html

  https://learn.microsoft.com/en-us/azure/cosmos-db/nosql/query/datetimebin

• Question 12:

  Note: The question is included in a number of questions that depicts the identical set-up. However, every question has a distinctive result. Establish if the solution satisfies the requirements.

  You are configuring a web app that delivers streaming video to users. The application makes use of continuous integration and deployment.

  You need to ensure that the application is highly available and that the users' streaming experience is constant. You also want to configure the application to store data in a geographic location that is nearest to the user.

  Solution: You include the use of Azure Redis Cache in your design.

  Does the solution meet the goal?

  A. Yes
  B. No
  B. No

• Question 13:

  DRAG DROP

  You are developing an application to securely transfer data between on-premises file systems and Azure Blob storage. The application stores keys, secrets, and certificates in Azure Key Vault. The application uses the Azure Key Vault APIs.

  The application must allow recovery of an accidental deletion of the key vault or key vault objects. Key vault objects must be retained for 90 days after deletion.

  You need to protect the key vault and key vault objects.

  Which Azure Key Vault feature should you use? To answer, drag the appropriate features to the correct actions. Each feature may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  

  ---

  Box 1: Soft delete

  When soft-delete is enabled, resources marked as deleted resources are retained for a specified period (90 days by default). The service further provides a mechanism for recovering the deleted object, essentially undoing the deletion.

  Box 2: Purge protection

  Purge protection is an optional Key Vault behavior and is not enabled by default. Purge protection can only be enabled once soft-delete is enabled.

  When purge protection is on, a vault or an object in the deleted state cannot be purged until the retention period has passed. Soft-deleted vaults and objects can still be recovered, ensuring that the retention policy will be followed.

  https://docs.microsoft.com/en-us/azure/key-vault/general/soft-delete-overview

• Question 14:

  Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

  After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear on the review screen.

  You have an Azure App Service web app named WebApp1 and an Azure Functions app named Function1. WebApp1 is associated with an Application Insights instance named appinsights1.

  You configure a web test and a corresponding alert for WebApp1 in appinsight1l. Each alert triggers a delivery of email to your mailbox.

  You need to ensure that each alert also triggers execution of Function1.

  Solution: Configure an Azure Monitor action group.

  Does the solution meet the goal?

  A. Yes
  B. No
  B. No

• Question 15:

  HOTSPOT

  You need to add code at line AM09 to ensure that users can review content using ContentAnalysisService.

  How should you complete the code? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  

  

  ---

  Box 1: "oauth2Permissions": ["login"]

  oauth2Permissions specifies the collection of OAuth 2.0 permission scopes that the web API (resource) app exposes to client apps. These permission scopes may be granted to client apps during consent.

  Box 2: "oauth2AllowImplicitFlow":true

  For applications (Angular, Ember.js, React.js, and so on), Microsoft identity platform supports the OAuth 2.0 Implicit Grant flow.

  https://docs.microsoft.com/en-us/azure/active-directory/develop/reference-app-manifest

• Question 16:

  You develop a serverless application using several Azure Functions. These functions connect to data from within the code.

  You want to configure tracing for an Azure Function App project.

  You need to change configuration settings in the host.json file.

  Which tool should you use?

  A. Visual Studio
  B. Azure portal
  C. Azure PowerShell
  D. Azure Functions Core Tools (Azure CLI)
  B. Azure portal

  ---

  Explanation

  The function editor built into the Azure portal lets you update the function.json file and the code file for a function. The host.json file, which contains some runtime-specific configurations, is in the root folder of the function app.

  

  References:

  https://docs.microsoft.com/en-us/azure/azure-functions/functions-reference#fileupdate

• Question 17:

  HOTSPOT

  You are developing an application that runs in several customer Azure Kubernetes Service clusters, Within each cluster, a pod runs that collects performance data to be analyzed later, a large amount of data is collected so saving latency must be minimized

  The performance data must be stored so that pod restarts do not impact the stored data.

  Write latency should be minimized.

  You need to configure blob storage.

  How should you complete the YAML configuration? To answer, select the appropriate options in the answer area.

  

  

• Question 18:

  You are developing an ASP.NET Core Web API web service. The web service uses Azure Application Insights for all telemetry and dependency tracking. The web service reads and writes data to a database other than Microsoft SQL Server.

  You need to ensure that dependency tracking works for calls to the third-party database.

  Which two dependency telemetry properties should you use? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Telemetry.Context.Cloud.RoleInstance
  B. Telemetry.Id
  C. Telemetry.Name
  D. Telemetry.Context.Operation.Id
  E. Telemetry.Context.Session.Id
  B. Telemetry.Id
  D. Telemetry.Context.Operation.Id

  ---

  Explanation

  Example:

  public async Task Enqueue(string payload)

  {

  // StartOperation is a helper method that initializes the telemetry item

  // and allows correlation of this operation with its parent and children.

  var operation = telemetryClient.StartOperation<DependencyTelemetry>("enqueue " + queueName);

  operation.Telemetry.Type = "Azure Service Bus";

  operation.Telemetry.Data = "Enqueue " + queueName;

  var message = new BrokeredMessage(payload);

  // Service Bus queue allows the property bag to pass along with the message.

  // We will use them to pass our correlation identifiers (and other context)

  // to the consumer.

  message.Properties.Add("ParentId", operation.Telemetry.Id);

  message.Properties.Add("RootId", operation.Telemetry.Context.Operation.Id); Reference:

  https://docs.microsoft.com/en-us/azure/azure-monitor/app/custom-operations-tracking

• Question 19:

  DRAG DROP

  You are a developer for a software as a service (SaaS) company that uses an Azure Function to process orders. The Azure Function currently runs on an Azure Function app that is triggered by an Azure Storage queue.

  You are preparing to migrate the Azure Function to Kubernetes using Kubernetes-based Event Driven Autoscaling (KEDA).

  You need to configure Kubernetes Custom Resource Definitions (CRD) for the Azure Function.

  Which CRDs should you configure? To answer, drag the appropriate CRD types to the correct locations. Each CRD type may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  

  ---

  Box 1: Deployment

  To deploy Azure Functions to Kubernetes use the func kubernetes deploy command has several attributes that directly control how our app scales, once it is deployed to Kubernetes.

  Box 2: ScaledObject

  With --polling-interval, we can control the interval used by KEDA to check Azure Service Bus Queue for messages.

  Example of ScaledObject with polling interval apiVersion: keda.k8s.io/v1alpha1 kind: ScaledObject metadata: name: transformer-fn namespace: tt labels: deploymentName: transformer-fn spec: scaleTargetRef: deploymentName: transformer-fn pollingInterval: 5 minReplicaCount: 0 maxReplicaCount: 100

  Box 3: Secret

  Store connection strings in Kubernetes Secrets.

  Example: to create the Secret in our demo

  Namespace:

  # create the k8s demo namespace kubectl create namespace tt

  # grab connection string from Azure Service Bus

  KEDA_SCALER_CONNECTION_STRING=$(az servicebus queue authorization-rule keys list \

  -g $RG_NAME \

  --namespace-name $SBN_NAME \

  --queue-name inbound \

  -n keda-scaler \

  --query "primaryConnectionString" \

  -o tsv)

  # create the kubernetes secret kubectl create secret generic tt-keda-auth \

  --from-literal KedaScaler=$KEDA_SCALER_CONNECTION_STRING \

  --namespace tt Reference:

  https://www.thinktecture.com/en/kubernetes/serverless-workloads-with-keda/

• Question 20:

  A company is developing a solution that allows smart refrigerators to send temperature information to a central location. You have an existing Service Bus.

  The solution must receive and store message until they can be processed. You create an Azure Service Bus Instance by providing a name, pricing tier, subscription, resource group, and location.

  You need to complete the configuration.

  Which Azure CLI or PowerShell command should you run?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

  ---

  Explanation

  A service bus instance has already been created (Step 2 below). Next is step 3, Create a Service Bus queue.

  Note:

  Steps:

  Step 1: # Create a resource group resourceGroupName="myResourceGroup" az group create --name $resourceGroupName --location eastus

  Step 2: # Create a Service Bus messaging namespace with a unique name namespaceName=myNameSpace$RANDOM az servicebus namespace create --resource-group $resourceGroupName --name $namespaceName --location eastus

  Step 3: # Create a Service Bus queue az servicebus queue create --resource-group $resourceGroupName --namespace-name $namespaceName --name BasicQueue

  Step 4: # Get the connection string for the namespace connectionString=$(az servicebus namespace authorization-rule keys list --resource-group $resourceGroupName --namespace-name $namespaceName --name RootManageSharedAccessKey --query primaryConnectionString --output tsv)

  https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-quickstart-cli