Microsoft Microsoft Certifications AZ-204 Questions & Answers

• Question 141:

  HOTSPOT

  You are developing an app that manages users for a video game. You plan to store the region, email address, and phone number for the player. Some players may not have a phone number. The player's region will be used to load-balance

  data.

  Data for the app must be stored in Azure Table Storage.

  You need to develop code to retrieve data for an individual player.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: region

  The player's region will be used to load-balance data.

  Choosing the PartitionKey.

  The core of any table's design is based on its scalability, the queries used to access it, and storage operation requirements. The PartitionKey values you choose will dictate how a table will be partitioned and the type of queries that can be

  used. Storage operations, in particular inserts, can also affect your choice of PartitionKey values.

  Box 2: email

  Not phone number some players may not have a phone number.

  Box 3: CloudTable

  Box 4 : TableOperation query =..

  Box 5: TableResult

  References:

  https://docs.microsoft.com/en-us/rest/api/storageservices/designing-a-scalable-partitioning-strategy-for-azure-table-storage

• Question 142:

  HOTSPOT

  A company is developing a Java web app. The web app code is hosted in a GitHub repository located at https://github.com/Contoso/webapp.

  The web app must be evaluated before it is moved to production. You must deploy the initial code release to a deployment slot named staging.

  You need to create the web app and deploy the code.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: group

  # Create a resource group.

  az group create --location westeurope --name myResourceGroup

  Box 2: appservice plan

  # Create an App Service plan in STANDARD tier (minimum required by deployment slots).

  az appservice plan create --name $webappname --resource-group myResourceGroup --sku S1

  Box 3: webapp

  # Create a web app.

  az webapp create --name $webappname --resource-group myResourceGroup \

  --plan $webappname

  Box 4: webapp deployment slot

  #Create a deployment slot with the name "staging".

  az webapp deployment slot create --name $webappname --resource-group myResourceGroup \

  --slot staging

  Box 5: webapp deployment source

  # Deploy sample code to "staging" slot from GitHub.

  az webapp deployment source config --name $webappname --resource-group myResourceGroup \

  --slot staging --repo-url $gitrepo --branch master --manual-integration

  References:

  https://docs.microsoft.com/en-us/azure/app-service/scripts/cli-deploy-staging-environment

• Question 143:

  HOTSPOT

  You are developing a back-end Azure App Service that scales based on the number of messages contained in a Service Bus queue.

  A rule already exists to scale up the App Service when the average queue length of unprocessed and valid queue messages is greater than 1000.

  You need to add a new rule that will continuously scale down the App Service as long as the scale up condition is not met.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Service bus queue

  You are developing a back-end Azure App Service that scales based on the number of messages contained in a Service Bus queue.

  Box 2: ActiveMessage Count

  ActiveMessageCount: Messages in the queue or subscription that are in the active state and ready for delivery.

  Box 3: Count

  Box 4: Less than or equal to

  You need to add a new rule that will continuously scale down the App Service as long as the scale up condition is not met.

  Box 5: Decrease count by

• Question 144:

  HOTSPOT

  You are developing an Azure Web App. You configure TLS mutual authentication for the web app.

  You need to validate the client certificate in the web app. To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Accessing the client certificate from App Service.

  If you are using ASP.NET and configure your app to use client certificate authentication, the certificate will be available through the HttpRequest.ClientCertificate property. For other application stacks, the client cert will be available in your app

  through a base64 encoded value in the "X-ARR-ClientCert" request header. Your application can create a certificate from this value and then use it for authentication and authorization purposes in your application.

  References:

  https://docs.microsoft.com/en-us/azure/app-service/app-service-web-configure-tls-mutual-auth

• Question 145:

  HOTSPOT

  You are creating a CLI script that creates an Azure web app related services in Azure App Service. The web app uses the following variables:

  

  You need to automatically deploy code from GitHub to the newly created web app.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: az appservice plan create

  The azure group creates command successfully returns JSON result. Now we can use resource group to create a azure app service plan

  Box 2: az webapp create

  Create a new web app..

  Box 3: --plan $webappname

  ..with the serviceplan we created in step.

  Box 4: az webapp deployment

  Continuous Delivery with GitHub. Example:

  az webapp deployment source config --name firstsamplewebsite1 --resource-group websites--repo-url $gitrepo --branch master --git-token $token

  Box 5: --repo-url $gitrepo --branch master --manual-integration

  References:

  https://medium.com/@satish1v/devops-your-way-to-azure-web-apps-with-azure-cli-206ed4b3e9b1

• Question 146:

  HOTSPOT

  You are developing an Azure Function App by using Visual Studio. The app will process orders input by an Azure Web App. The web app places the order information into Azure Queue Storage.

  You need to review the Azure Function App code shown below.

  

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: No

  ExpirationTime - The time that the message expires.

  InsertionTime - The time that the message was added to the queue.

  Box 2: Yes

  maxDequeueCount - The number of times to try processing a message before moving it to the poison queue. Default value is 5.

  Box 3: Yes

  When there are multiple queue messages waiting, the queue trigger retrieves a batch of messages and invokes function instances concurrently to process them. By default, the batch size is 16. When the number being processed gets down

  to 8, the runtime gets another batch and starts processing those messages. So the maximum number of concurrent messages being processed per function on one virtual machine (VM) is 24.

  Box 4: Yes

  References:

  https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-storage-queue

• Question 147:

  HOTSPOT

  You have an Azure Batch project that processes and converts files and stores the files in Azure storage. You are developing a function to start the batch job.

  You add the following parameters to the function.

  

  You must ensure that converted files are placed in the container referenced by the outputContainerSasUrl parameter. Files which fail to convert are placed in the container referenced by the failedContainerSasUrl parameter.

  You need to ensure the files are correctly processed.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: CreateJob

  Box 2: TaskSuccess

  TaskSuccess: Upload the file(s) only after the task process exits with an exit code of 0.

  Incorrect: TaskCompletion: Upload the file(s) after the task process exits, no matter what the exit code was.

  Box 3: TaskFailure

  TaskFailure:Upload the file(s) only after the task process exits with a nonzero exit code.

  Box 4: OutputFiles

  To specify output files for a task, create a collection of OutputFile objects and assign it to the CloudTask.OutputFiles property when you create the task.

  References:

  https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.batch.protocol.models.outputfileuploadcondition

  https://docs.microsoft.com/en-us/azure/batch/batch-task-output-files

• Question 148:

  HOTSPOT

  A company runs an international travel and bookings management service. The company plans to begin offering restaurant bookings.

  You must develop a solution that uses Azure Search and meets the following requirements:

  1.

  Users must be able to search for restaurants by name, description, location, and cuisine.

  2.

  Users must be able to narrow the results further by location, cuisine, rating, and family-friendliness.

  3.

  All words in descriptions must be included in searches.

  You need to add annotations to the restaurant class.

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

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: [IsSearchable.IsFilterable.IsSortable,IsFacetable]

  Location

  Users must be able to search for restaurants by name, description, location, and cuisine.

  Users must be able to narrow the results further by location, cuisine, rating, and family-friendliness.

  Box 2: [IsSearchable.IsFilterable.IsSortable,Required]

  Description

  Users must be able to search for restaurants by name, description, location, and cuisine.

  All words in descriptions must be included in searches.

  Box 3: [IsFilterable,IsSortable,IsFaceTable]

  Rating

  Users must be able to narrow the results further by location, cuisine, rating, and family-friendliness.

  Box 4: [IsSearchable.IsFilterable,IsFacetable]

  Cuisines

  Users must be able to search for restaurants by name, description, location, and cuisine.

  Users must be able to narrow the results further by location, cuisine, rating, and family-friendliness.

  Box 5: [IsFilterable,IsFacetable]

  FamilyFriendly

  Users must be able to narrow the results further by location, cuisine, rating, and family-friendliness.

  References:

  https://www.henkboelman.com/azure-search-the-basics/

• Question 149:

  HOTSPOT

  You are developing an Azure App Service hosted ASP.NET Core API app by using C#. The API app will allow users to authenticate by using Twitter and Azure Active Directory (Azure AD).

  Users must be authenticated before calling API methods. You must log the user's name for each method call.

  You need to configure the API method calls.

  Which values should you use? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Authorize

  Box 2: X-MS-CLIENT-PRINCIPAL-NAME

  App Service passes user claims to your application by using special headers. External requests aren't allowed to set these headers, so they are present only if set by App Service. Some example headers include:

  X-MS-CLIENT-PRINCIPAL-NAME X-MS-CLIENT-PRINCIPAL-ID Here's the set of headers you get from Easy Auth for a Twitter authenticated user:

  { "cookie": "AppServiceAuthSession=Lx43...xHDTA==", ...

  "x-ms-client-principal-name": "evilSnobu",

  "x-ms-client-principal-id": "35....",

  "x-ms-client-principal-idp": "twitter",

  "x-ms-token-twitter-access-token": "35...Dj",

  "x-ms-token-twitter-access-token-secret": "OK3...Jx",

  }

  References: https://docs.microsoft.com/en-us/azure/app-service/app-service-authentication-how-to

• Question 150:

  HOTSPOT

  You are developing a .NET Core MVC application for customers to research hotels. The application will use Azure Search. The application will search the index by using various criteria to locate documents related to hotels. The index will

  include search fields for rate, a list of amenities, and distance to the nearest airport.

  The application must support the following scenarios for specifying search criteria and organizing results:

  Search the index by using regular expressions.

  Organize results by counts for name-value pairs.

  List hotels within a specified distance to an airport and that fall within a specific price range.

  You need to configure the SearchParameters class.

  Which properties should you configure? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: QueryType

  The SearchParameters.QueryType Property gets or sets a value that specifies the syntax of the search query. The default is 'simple'. Use 'full' if your query uses the Lucene query syntax.

  You can write queries against Azure Search based on the rich Lucene Query Parser syntax for specialized query forms: wildcard, fuzzy search, proximity search, regular expressions are a few examples.

  Box 2: Facets

  The facets property gets or sets the list of facet expressions to apply to the search query. Each facet expression contains a field name, optionally followed by a comma-separated list of name:value pairs.

  Box 3: Filter

  The Filter property gets or sets the OData $filter expression to apply to the search query. References: https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.search.models.searchparameters

  https://docs.microsoft.com/en-us/azure/search/query-lucene-syntax https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.search.models.searchparameters.querytype