Microsoft AZ-204 Online Practice Questions and Exam Preparation

Microsoft AZ-204 Online Questions & Answers

• Question 391:

  You need to reduce read latency for the retail store solution.

  What are two possible ways to achieve the goal? Each correct answer presents a complete solution.

  NOTE: Each correct selection is worth one point.

  A. Create a new composite index for the store location data queries in Azure Cosmos DB. Modify the queries to support parameterized SQL and update the Azure function app to call the new Queries.
  B. Configure Azure Cosmos DB consistency to strong consistency Increase the RUs for the container supporting store location data.
  C. Provision an Azure Cosmos OB dedicated gateway, update blob storage to use the new dedicated gateway endpoint.
  D. Configure Azure Cosmos DB consistency to session consistency. Cache session tokens in a new Azure Redis cache instance after every write. Update reads to use the session token stored in Azure Redis.
  E. Provision an Azure Cosmos DB dedicated gateway Update the Azure Function app connection string to use the new dedicated gateway endpoint.
  A. Create a new composite index for the store location data queries in Azure Cosmos DB. Modify the queries to support parameterized SQL and update the Azure function app to call the new Queries.
  E. Provision an Azure Cosmos DB dedicated gateway Update the Azure Function app connection string to use the new dedicated gateway endpoint.

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  Explanation

  Azure Cosmos DB queries from the Azure Function exhibit high Request Unit (RU) usage and contain multiple, complex queries that exhibit high point read latency for large items as the function app is scaling.

  https://docs.microsoft.com/en-us/azure/architecture/solution-ideas/articles/data-cache-with-redis-cache

  https://docs.microsoft.com/en-us/azure/cosmos-db/dedicated-gateway

• Question 392:

  You are a developing a SaaS application that stores data as key value pairs.

  You must make multiple editions of the application available. In the lowest cost edition, the performance must be best-effort, and there is no regional failover.

  In higher cos! editions customers must be able to select guaranteed performance and support for multiple regions. Azure costs must be minimized.

  Which Azure Cosmos OB API should you use for the application?

  A. Core
  B. MongoDB
  C. Cassandra
  D. Table API
  C. Cassandra

• Question 393:

  HOTSPOT

  You develop and deploy the following staticwebapp.config.json file to the app_location value specified in the workflow file of an Azure Static Web app.

  

  

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

  NOTE: Each correct selection is worth one point.

  

  

• Question 394:

  You develop and deploy an ASP.NET Core application that connects to an Azure Database for MySQL instance.

  Connections to the database appear to drop intermittently and the application code does not handle the connection failure.

  You need to handle the transient connection errors in code by implementing retries.

  What are three possible ways to achieve this goal? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  A. Increase connection repeat attempts exponentially up to 120 seconds.
  B. Close the database connection and immediately report an error.
  C. Wait five seconds before repeating the connection attempt to the database.
  D. Disable connection pooling and configure a second Azure Database for MySQL instance.
  E. Set a maximum number of connection attempts to 10 and report an error on subsequent connections.
  A. Increase connection repeat attempts exponentially up to 120 seconds.
  C. Wait five seconds before repeating the connection attempt to the database.
  E. Set a maximum number of connection attempts to 10 and report an error on subsequent connections.

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  Explanation

  A transient error is an error that will resolve itself. Transient errors can occur for example when hardware or network failure happens.

  A best practice for designing and developing applications in the cloud is to expect transient errors. Assume they can happen in any component at any time and have the appropriate logic to handle these situations.

  Transient errors should be handled using retry logic.

  A good pattern to follow is:

  Wait for 5 seconds before your first retry.

  For each following retry, the increase the wait exponentially, up to 60 seconds.

  Set a max number of retries at which point your application considers the operation failed.

  https://learn.microsoft.com/en-us/azure/mysql/single-server/concepts-connectivity#handling-transient-errors

• Question 395:

  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.

  

  

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  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 396:

  You need to configure the ContentUploadService deployment.

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

  NOTE: Each correct selection is worth one point.

  A. Add the following markup to line CS23: types: Private
  B. Add the following markup to line CS24: osType: Windows
  C. Add the following markup to line CS24: osType: Linux
  D. Add the following markup to line CS23: types: Public
  A. Add the following markup to line CS23: types: Private

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  Explanation

  Scenario: All Internal services must only be accessible from Internal Virtual Networks (VNets)

  There are three Network Location types - Private, Public and Domain

  https://devblogs.microsoft.com/powershell/setting-network-location-to-private/

• Question 397:

  DRAG DROP

  You develop an ASP.NET Core MVC application. You configure the application to track webpages and custom events.

  You need to identify trends in application usage.

  Which Azure Application Insights Usage Analysis features should you use? To answer, drag the appropriate features to the correct requirements. 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:

  

  

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  Box1: Users

  Box 2: Impact

  One way to think of Impact is as the ultimate tool for settling arguments with someone on your team about how slowness in some aspect of your site is affecting whether users stick around. While users may tolerate a certain amount of slowness, Impact gives you insight into how best to balance optimization and performance to maximize user conversion.

  Box 3: Retention

  The retention feature in Azure Application Insights helps you analyze how many users return to your app, and how often they perform particular tasks or achieve goals. For example, if you run a game site, you could compare the numbers of users who return to the site after losing a game with the number who return after winning. This knowledge can help you improve both your user experience and your business strategy.

  Box 4: User flows

  The User Flows tool visualizes how users navigate between the pages and features of your site. It's great for answering questions like:

  How do users navigate away from a page on your site?

  What do users click on a page on your site?

  Where are the places that users churn most from your site?

  Are there places where users repeat the same action over and over?

  Incorrect Answers:

  Funnel: If your application involves multiple stages, you need to know if most customers are progressing through the entire process, or if they are ending the process at some point. The progression through a series of steps in a web application is known as a funnel. You can use Azure Application Insights Funnels to gain insights into your users, and monitor step-by-step conversion rates.

  References:

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

• Question 398:

  You a web application that provides access to legal documents that are stored on Azure Blob Storage with version level immutability policies. Documents are protected with both time-based policies legal hold policies. All time--based retention policies have Allow Protected Append Writes property enabled.

  You have a requirement to prevent the user from attempting to perform operations that would fail only a legal is in effect and when all other are expired

  You reed to meet the requirement.

  Which two operations you prevent?

  A. adding data to documents
  B. deleting documents
  C. creating documents
  D. overwriting existing documents
  B. deleting documents
  D. overwriting existing documents

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  Explanation

  The Append Block operation is permitted only for policies with the allowProtectedAppendWrites or allowProtectedAppendWritesAll property enabled.

  The AllowProtectedAppendWrites property setting allows for writing new blocks to an append blob while maintaining immutability protection and compliance. If this setting is enabled, you can create an append blob directly in the policy- protected container, and then continue to add new blocks of data to the end of the append blob with the Append Block operation. Only new blocks can be added; any existing blocks can't be modified or deleted. Enabling this setting doesn't affect the immutability behavior of block blobs or page blobs.

  https://learn.microsoft.com/en-us/azure/storage/blobs/immutable-time-based-retention-policy-overview#allow-protected-append-blobs-writes

• Question 399:

  HOTSPOT

  You are developing an online game that allows players to vote for their favorite photo that illustrates a word. The game is built by using Azure Functions and uses durable entities to track the vote count.

  The voting window is 30 seconds. You must minimize latency.

  You need to implement the Azure Function for voting.

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

  

  

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  Box 1: [DurableClient] IDurableEntityClient

  Manage instances in Durable Functions in Azure

  Orchestrations in Durable Functions are long-running stateful functions that can be started, queried, suspended, resumed, and terminated using built-in management APIs.

  Example: client signals entity through interface

  Client code can use SignalEntityAsync<TEntityInterface> to send signals to entities that implement TEntityInterface. For example:

  C#

  [FunctionName("DeleteCounter")] public static async Task<HttpResponseMessage> DeleteCounter(

  [HttpTrigger(AuthorizationLevel.Function, "delete", Route = "Counter/{entityKey}")] HttpRequestMessage req,

  [DurableClient] IDurableEntityClient client,

  string entityKey)

  { var entityId = new EntityId("Counter", entityKey);

  await client.SignalEntityAsync<ICounter>(entityId, proxy => proxy.Delete());

  return req.CreateResponse(HttpStatusCode.Accepted);

  }

  In this example, the proxy parameter is a dynamically generated instance of ICounter, which internally translates the call to Delete into a signal.

  Note: HTTP Features

  Durable Functions has several features that make it easy to incorporate durable orchestrations and entities into HTTP workflows.

  Exposing HTTP APIs

  Orchestrations and entities can be invoked and managed using HTTP requests. The Durable Functions extension exposes built-in HTTP APIs. It also provides APIs for interacting with orchestrations and entities from within HTTP-triggered functions.

  Box 2: SignalEntityAsync

  https://learn.microsoft.com/en-us/azure/azure-functions/durable/durable-functions-dotnet-entities

• Question 400:

  You are developing several microservices to deploy to a Azure Service cluster. The microservices manage data stored in Azure Cosmos DB and Azure Blob storage. The data is secured by using customer-managed keys stored in Aue Key Vault.

  You must automate key rotation for all Key Vault keys and allow for manual key rotation. Keys must rotate every three months. Notifications Of expiring keys must be sent before key expiry.

  You need to configure key rotation and enable key expiry notifications.

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

  NOTE: Each correct selection is worth

  A. Create and configure a new Azure Event Grid instance.
  B. Create configure a key rotation policy during key creation
  C. Create and assign an Azure Key Vault access
  D. Configure Azure Key Vault
  A. Create and configure a new Azure Event Grid instance.
  B. Create configure a key rotation policy during key creation

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  Explanation

  https://learn.microsoft.com/en-us/azure/key-vault/keys/how-to-configure-key-rotation