Microsoft AZ-204 Online Practice Questions and Exam Preparation

Microsoft AZ-204 Online Questions & Answers

• Question 401:

  HOTSPOT

  You need to resolve the authentication errors for developers.

  Which Service Bus security configuration should you use? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  

  

• Question 402:

  You need to implement a solution to resolve the retail store location data issue.

  Which three Azure Blob features should you enable? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Soft delete
  B. Change feed
  C. Snapshots
  D. Versioning
  E. Object replication
  F. Immutability
  A. Soft delete
  B. Change feed
  D. Versioning

  ---

  Explanation

  Scenario: You must perform a point-in-time restoration of the retail store location data due to an unexpected and accidental deletion of data.

  Before you enable and configure point-in-time restore, enable its prerequisites for the storage account: soft delete, change feed, and blob versioning.

  https://docs.microsoft.com/en-us/azure/storage/blobs/point-in-time-restore-manage

• Question 403:

  DRAG DROP

  You are developing Azure WebJobs.

  You need to recommend a WebJob type for each scenario.

  Which WebJob type should you recommend? To answer, drag the appropriate WebJob types to the correct scenarios. Each WebJob 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 s worth one point.

  Select and Place:

  

  

  ---

  Box 1: Continuous

  Continuous runs on all instances that the web app runs on. You can optionally restrict the WebJob to a single instance.

  Box 2: Triggered

  Triggered runs on a single instance that Azure selects for load balancing.

  Box 3: Continuous

  Continuous supports remote debugging.

  Note:

  The following table describes the differences between continuous and triggered WebJobs.

  

  References:

  https://docs.microsoft.com/en-us/azure/app-service/web-sites-create-web-jobs

• Question 404:

  You are updating an application that stores data on Azure and uses Azure Cosmos DB for storage. The application stores data in multiple documents associated with a single username.

  The application requires the ability to update multiple documents for a username in a single ACID operation.

  You need to configure Azure Cosmos DB.

  Which two actions should you perform? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Create a collection sharded on username to store documents.
  B. Configure Azure Cosmos DB to use the Gremlin API.
  C. Create an unsharded collection to store documents.
  D. Configure Azure Cosmos DB to use the MongoDB API.
  C. Create an unsharded collection to store documents.
  D. Configure Azure Cosmos DB to use the MongoDB API.

  ---

  Explanation

  C: Multi-document transactions, Requirements

  Multi-document transactions are supported within an unsharded collection in API version 4.0. Multi-document transactions are not supported across collections or in sharded collections in 4.0.

  D: In Azure Cosmos DB for MongoDB, operations on a single document are atomic. Multi-document transactions enable applications to execute atomic operations across multiple documents. It offers "all-or-nothing" semantics to the operations. On commit, the changes made inside the transactions are persisted and if the transaction fails, all changes inside the transaction are discarded.

  Multi-document transactions follow ACID semantics:

  Atomicity: All operations treated as one

  Consistency: Data committed is valid

  Isolation: Isolated from other operations

  Durability: Transaction data is persisted when client is told so

  https://learn.microsoft.com/en-us/azure/cosmos-db/mongodb/use-multi-document-transactions

• Question 405:

  HOTSPOT

  A company is developing a mobile app for field service employees using Azure App Service Mobile Apps as the backend.

  The company's network connectivity varies throughout the day. The solution must support offline use and synchronize changes in the background when the app is online app.

  You need to implement the solution.

  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.

  

  

  ---

  Box 1: var todoTable = client GetSyncTable<TodoItem>()

  To setup offline access, when connecting to your mobile service, use the method GetSyncTable instead of GetTable (example):

  IMobileServiceSyncTable todoTable = App.MobileService.GetSyncTable(); /

  Box 2: await todoTable.PullAsync("allTodoItems",todo.Table.CreateQuery());

  Your app should now use IMobileServiceSyncTable (instead of IMobileServiceTable) for CRUD operations. This will save changes to the local database and also keep a log of the changes. When the app is ready to synchronize its changes with the Mobile Service, use the methods

  PushAsync and PullAsync (example):

  await App.MobileService.SyncContext.PushAsync();

  await todoTable.PullAsync(); References:

  https://azure.microsoft.com/es-es/blog/offline-sync-for-mobile-services/

• Question 406:

  You are developing several Azure API Management (APIM) hosted APIs.

  You must inspect request processing of the APIs in APIM. Requests to APIM by using a REST client must also be included. The request inspection must include the following information:

  requests APIM sent to the API backend and the response it received policies applied to the response before sending back to the caller errors that occurred during the processing of the request and the policies applied to the errors original request APIM received from the caller and the policies applied to the request

  You need to inspect the APIs.

  Which three actions should you do? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Enable the Allow tracing setting for the subscription used to inspect the API.
  B. Add the Ocp-Apim-Trace header value to the API call whit a value set to true.
  C. Add the Ocp-Apim-Subscription-Key header value to the key for a subscription that allows access to the API.
  D. Create and configure a custom policy. Apply the policy to the inbound policy section with a global scope.
  E. Create and configure a custom policy. Apply the policy to the outbound policy section with an API scope.
  A. Enable the Allow tracing setting for the subscription used to inspect the API.
  C. Add the Ocp-Apim-Subscription-Key header value to the key for a subscription that allows access to the API.
  E. Create and configure a custom policy. Apply the policy to the outbound policy section with an API scope.

  ---

  Explanation

  A: To trace request processing, you must enable the Allow tracing setting for the subscription used to debug your API.

  C: Use a subscription key

  A subscriber can use an API Management subscription key in one of two ways:

  Add the Ocp-Apim-Subscription-Key HTTP header to the request, passing the value of a valid subscription key.

  Include the subscription-key query parameter and a valid value in the URL. The query parameter is checked only if the header isn't present.

  E:

  Outbound - Shows the policies applied to the response before sending back to the caller.

  Note: API request with a subscription key

  When API Management receives an API request from a client with a subscription key, it handles the request according to these rules:

  1. Check if it's a valid key associated with an active subscription, either:

  A subscription scoped to the API

  A subscription scoped to a product that's assigned to the API

  A subscription scoped to all APIs

  The service-scoped subscription (built-in all access subscription)

  If a valid key for an active subscription at an appropriate scope is provided, access is allowed. Policies are applied depending on the configuration of the policy definition at that scope.

  2. Otherwise, access is denied (401 Access denied error).

  Incorrect:

  Not D: Inbound - Shows the original request API Management received from the caller and the policies applied to the request.

  https://learn.microsoft.com/en-us/azure/api-management/api-management-howto-api-inspector

  https://learn.microsoft.com/en-us/azure/api-management/api-management-subscriptions

• Question 407:

  DRAG DROP

  You are designing a solution that will use two Azure Functions apps:

  1. App1 and App2.

  2. App1 is Windows-based and will be deployed as code.

  3. App2 is Linux-based and will be deployed as a container image.

  Estimates show that the duration of the request processing for both apps will range from 1 to 10 minutes.

  You plan to implement Appl and App2 by using the hosting plan to satisfy the following requirements:

  1. Request processing can complete within the estimated time range.

  2. The autoscaling behavior is event-driven.

  3. The upper scaling limit is maximized.

  Select and Place:

  

  

• Question 408:

  A company uses an Azure Blob Storage for archiving.

  The company requires that data in the Blob Storage is only in the archive tier.

  You need to ensure data copied to the Blob Storage is moved to the archive tier.

  What should you do?

  A. Use a Put Block List operation with a request header of x-ms-immutability-policy-mode.
  B. Create a lifecycle policy with an action of tierToArchive and configure daysAftenModificationGreaterThan for 0.
  C. Use a Put Blob operation with a request header of x-ms-immutability-policy-unrjl-date.
  D. Create a lifecycle policy with an action of tierToArchive and configure a filter for bloblndexMatch.
  B. Create a lifecycle policy with an action of tierToArchive and configure daysAftenModificationGreaterThan for 0.

• Question 409:

  HOTSPOT

  You need to implement the Log policy.

  How should you complete the EnsureLogging method in EventGridController.cs? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  

  

  ---

  Box 1: logdrop

  All log files should be saved to a container named logdrop.

  Box 2: 15

  Logs must remain in the container for 15 days.

  Box 3: UpdateApplicationSettings

  All Azure App Service Web Apps must write logs to Azure Blob storage.

  https://blog.hompus.nl/2017/05/29/adding-application-logging-blob-to-a-azure-web-app-service-using-powershell/

• Question 410:

  You are a developer for a SaaS company that offers many web services.

  All web services for the company must meet the following requirements:

  1. Use API Management to access the services

  2. Use OpenID Connect for authentication.

  3. Prevent anonymous usage

  A recent security audit found that several web services can be called without any authentication.

  Which API Management policy should you implement?

  A. validate-jwt
  B. jsonp
  C. authentication-certificate
  D. check-header
  A. validate-jwt

  ---

  Explanation

  Add the validate-jwt policy to validate the OAuth token for every incoming request.

  Incorrect Answers:

  B: The jsonp policy adds JSON with padding (JSONP) support to an operation or an API to allow cross-domain calls from JavaScript browser-based clients. JSONP is a method used in JavaScript programs to request data from a server in a different domain. JSONP bypasses the limitation enforced by most web browsers where access to web pages must be in the same domain.

  JSONP - Adds JSON with padding (JSONP) support to an operation or an API to allow cross-domain calls from JavaScript browser-based clients.

  References:

  https://docs.microsoft.com/en-us/azure/api-management/api-management-howto-protect-backend-with-aad