AZ-204 — Developing Solutions for Microsoft Azure Study Guide

Question 182

You are developing an application to store business-critical data in Azure Blob storage. The application must meet the following requirements: • Data must not be modified or deleted for a user-specified interval. • Data must be protected from overwrites and deletes. • Data must be written once and allowed to be read many times. You need to protect the data in the Azure Blob storage account. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Question 456

HOTSPOT - You are developing an ASP.NET Core web application. You plan to deploy the application to Azure Web App for Containers. The application needs to store runtime diagnostic data that must be persisted across application restarts. You have the following code: You need to configure the application settings so that diagnostic data is stored as required. How should you configure the web app's settings? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point. Hot Area:

Question 357

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. Hot Area:

Question 478

You are developing a solution that will use Azure messaging services. You need to ensure that the solution uses a publish-subscribe model and eliminates the need for constant polling. What are two possible ways to achieve the goal? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.

Question 103

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 in the review screen. You deploy an Azure Container Apps app and disable ingress on the container app. Users report that they are unable to access the container app. You investigate and observe that the app has scaled to 0 instances. You need to resolve the issue with the container app. Solution: Enable ingress, create a custom scale rule, and apply the rule to the container app. Does the solution meet the goal?

Question 224

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.

Question 69

HOTSPOT - A company has an Azure Cosmos DB for NoSQL account. The account is configured for session consistency. Data is written to a single Azure region and data can be read from three Azure regions. An application that will access the Azure Cosmos DB for NoSQL container data using an SDK has the following requirements: • Reads from the application must return the most recent committed version of an item from any Azure region. • The container items should not automatically be deleted. You need to implement the changes to the Azure Cosmos DB for NoSQL account. What should you do? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.

Question 139

You are developing several Azure API Management (APIM) hosted APIs. The APIs have the following requirements: • Require a subscription key to access all APIs. • Include terms of use that subscribers must accept to use the APIs. • Administrators must review and accept or reject subscription attempts. • Limit the count of multiple simultaneous subscriptions. You need to implement the APIs. What should you do?

Question 24

You are developing a microservices-based application that uses Azure Container Apps. The application consists of several containerized services that handle tasks, such as processing orders, managing inventory, and generating reports. You deploy two microservices named serviceA and serviceB to support managing inventory. You have the following requirements: • serviceA and serviceB must publish events to a single Azure Event Hub by using the Event Hubs SDK. • serviceA must publish 1,000 events per second. • serviceB must publish 3,000 events per second. • Costs must be minimized. You need to support the publishing of events. What should you do?

Question 269

You are a developer at your company. You need to edit the workflows for an existing Logic App. What should you use?

Question 470

You are developing an application that uses Azure Blob storage. The application must read the transaction logs of all the changes that occur to the blobs and the blob metadata in the storage account for auditing purposes. The changes must be in the order in which they occurred, include only create, update, delete, and copy operations and be retained for compliance reasons. You need to process the transaction logs asynchronously. What should you do?

Question 313

DRAG DROP - You develop an Azure solution that uses Cosmos DB. The current Cosmos DB container must be replicated and must use a partition key that is optimized for queries. You need to implement a change feed processor solution. Which change feed processor components should you use? To answer, drag the appropriate components to the correct requirements. Each component 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 the content. NOTE: Each correct selection is worth one point. Select and Place:

Question 477

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 in the review screen. You are developing an Azure solution to collect point-of-sale (POS) device data from 2,000 stores located throughout the world. A single device can produce 2 megabytes (MB) of data every 24 hours. Each store location has one to five devices that send data. You must store the device data in Azure Blob storage. Device data must be correlated based on a device identifier. Additional stores are expected to open in the future. You need to implement a solution to receive the device data. Solution: Provision an Azure Event Grid. Configure event filtering to evaluate the device identifier. Does the solution meet the goal?

Question 9

You have an on-premises, public-facing website named www.contoso.com. You plan to test availability of www.contoso.com by using Application Insights availability tests. You need to configure a test that will generate HTTP POST requests that include custom headers. Your solution must minimize development effort. Which type of test should you configure?

Question 94

Case study - This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided. To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other questions in this case study. At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next section of the exam. After you begin a new section, you cannot return to this section. To start the case study - To display the first question in this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. When you are ready to answer a question, click the Question button to return to the question. Background - Munson’s Pickles and Preserves Farm is an agricultural cooperative corporation based in Washington, US, with farms located across the United States. The company supports agricultural production resources by distributing seeds fertilizers, chemicals, fuel, and farm machinery to the farms. Current Environment - The company is migrating all applications from an on-premises datacenter to Microsoft Azure. Applications support distributors, farmers, and internal company staff. Corporate website - • The company hosts a public website located at http://www.munsonspicklesandpreservesfarm.com. The site supports farmers and distributors who request agricultural production resources. Farms - • The company created a new customer tenant in the Microsoft Entra admin center to support authentication and authorization for applications. Distributors - • Distributors integrate their applications with data that is accessible by using APIs hosted at http://www.munsonspicklesandpreservesfarm.com/api to receive and update resource data. Requirements - The application components must meet the following requirements: Corporate website - • The site must be migrated to Azure App Service. • Costs must be minimized when hosting in Azure. • Applications must automatically scale independent of the compute resources. • All code changes must be validated by internal staff before release to production. • File transfer speeds must improve, and webpage-load performance must increase. • All site settings must be centrally stored, secured without using secrets, and encrypted at rest and in transit. • A queue-based load leveling pattern must be implemented by using Azure Service Bus queues to support high volumes of website agricultural production resource requests. Farms - • Farmers must authenticate to applications by using Microsoft Entra ID. Distributors - • The company must track a custom telemetry value with each API call and monitor performance of all APIs. • API telemetry values must be charted to evaluate variations and trends for resource data. Internal staff - • App and API updates must be validated before release to production. • Staff must be able to select a link to direct them back to the production app when validating an app or API update. • Staff profile photos and email must be displayed on the website once they authenticate to applications by using their Microsoft Entra ID. Security - • All web communications must be secured by using TLS/HTTPS. • Web content must be restricted by country/region to support corporate compliance standards. • The principle of least privilege must be applied when providing any user rights or process access rights. • Managed identities for Azure resources must be used to authenticate services that support Microsoft Entra ID authentication. Issues - Corporate website - • Farmers report HTTP 503 errors at the same time as internal staff report that CPU and memory usage are high. • Distributors report HTTP 502 errors at the same time as internal staff report that average response times and networking traffic are high. • Internal staff report webpage load sizes are large and take a long time to load. • Developers receive authentication errors to Service Bus when they debug locally. Distributors - • Many API telemetry values are sent in a short period of time. Telemetry traffic, data costs, and storage costs must be reduced while preserving a statistically correct analysis of the data points sent by the APIs. You need to secure the corporate website to meet the security requirements. What should you do?