Microsoft AZ-204 Questions Pratiques et Examen Blanc Gratuit | Cloud Pass

Questions d'entraînement

Question 1

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 Service application that processes queue data when it receives a message from a mobile application. Messages may not be sent to the service consistently. You have the following requirements: ✑ Queue size must not grow larger than 80 gigabytes (GB). ✑ Use first-in-first-out (FIFO) ordering of messages. ✑ Minimize Azure costs. You need to implement the messaging solution. Solution: Use the .Net API to add a message to an Azure Service Bus Queue from the mobile application. Create an Azure Windows VM that is triggered from Azure Service Bus Queue. Does the solution meet the goal?

Question 2

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 Service application that processes queue data when it receives a message from a mobile application. Messages may not be sent to the service consistently. You have the following requirements: ✑ Queue size must not grow larger than 80 gigabytes (GB). ✑ Use first-in-first-out (FIFO) ordering of messages. ✑ Minimize Azure costs. You need to implement the messaging solution. Solution: Use the .Net API to add a message to an Azure Storage Queue from the mobile application. Create an Azure VM that is triggered from Azure Storage Queue events. Does the solution meet the goal?

Question 3

(Sélectionnez 2)

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.

Analyse de la question

Core Concept: This question tests Azure messaging patterns—specifically the publish-subscribe (pub-sub) model and event-driven delivery that avoids constant polling. In Azure, pub-sub means publishers send messages/events to a broker, and multiple independent subscribers receive them via subscriptions/handlers. Why the Answer is Correct: Azure Service Bus (A) supports pub-sub through Topics and Subscriptions. A publisher sends a message to a Topic, and each Subscription receives its own copy, enabling fan-out to multiple consumers. Consumers can receive messages using push-like mechanisms (e.g., Service Bus-triggered Azure Functions) rather than polling in application code. Azure Event Grid (C) is a native event routing service built for reactive architectures. It delivers events to subscribers (webhooks, Azure Functions, Logic Apps, Service Bus, etc.) with push delivery and retry, which eliminates the need for consumers to poll for changes. Key Features / Best Practices: - Service Bus Topics/Subscriptions: durable messaging, at-least-once delivery, dead-lettering, sessions (ordering), duplicate detection, filters/actions on subscriptions, and transactions. Use when you need enterprise messaging guarantees and decoupling between services. - Event Grid: push-based event distribution, built-in integration with many Azure sources (Storage, Resource Groups, etc.), filtering, advanced routing, and managed retries with dead-lettering to Storage. Use for event notification and reactive workflows. From an Azure Well-Architected Framework perspective, both improve Reliability and Performance Efficiency by decoupling producers/consumers and avoiding wasteful polling. Common Misconceptions: - Event Hubs (B) is often mistaken for pub-sub. It is primarily for high-throughput telemetry/stream ingestion with partitioned consumer groups; it’s more “streaming” than classic pub-sub messaging and typically requires consumers to read from partitions (often perceived as polling/reading) rather than push delivery. - Queue (D) (e.g., Storage Queue) is point-to-point (competing consumers) rather than pub-sub; one message is processed by one consumer, not fanned out to multiple subscribers. Exam Tips: - If the question says “publish-subscribe” and “multiple subscribers,” think Service Bus Topics or Event Grid. - If it emphasizes “event notifications” and “push to handlers,” Event Grid is the best fit. - If it emphasizes “enterprise messaging, workflows, ordering, dead-lettering, transactions,” Service Bus is the best fit. - If it emphasizes “telemetry, logs, millions of events/sec, streaming analytics,” think Event Hubs.

Question 4

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?

Analyse de la question

Core concept: This question tests choosing the correct Azure ingestion service for device telemetry at scale and understanding the difference between Event Grid (event notification/routing) and services designed for high-throughput device-to-cloud data ingestion (IoT Hub/Event Hubs) before persisting to Blob storage. Why the answer is correct: Event Grid is primarily an event routing service for discrete events (e.g., “blob created”, “resource changed”) and is not intended to be the primary endpoint for continuous device telemetry uploads from thousands of POS devices. While Event Grid supports filtering on event metadata, it does not provide the device connectivity, ingestion semantics, or telemetry-oriented features needed to reliably receive and buffer device data streams at scale. A more appropriate pattern is to ingest device messages via Azure IoT Hub (or Event Hubs for non-IoT scenarios), then use routing/Stream Analytics/Functions to write to Blob Storage with partitioning by device identifier. Key features / configurations: - Azure Event Grid: event notification, push delivery to handlers, filtering on event subject/type/data fields, at-least-once delivery for events. - Azure IoT Hub: per-device identity, device authentication, device-to-cloud telemetry ingestion, message routing to storage/endpoints. - Azure Event Hubs: high-throughput event ingestion, partitions/consumer groups; typically paired with processors to persist to Blob. - Correlation by device identifier: use IoT Hub device ID or message properties; write to Blob paths like /deviceId=/yyyy=/mm=/dd= for efficient organization. Common misconceptions: - Assuming Event Grid is a general-purpose ingestion endpoint for arbitrary device payloads; it is mainly for routing events emitted by Azure services or custom publishers, not for direct device telemetry at scale. - Confusing “filtering” with “correlation/storage partitioning”; filtering only decides where events go, it doesn’t inherently organize or persist data by device ID. - Overlooking device management needs (identity, authentication, throttling) that IoT Hub provides. Exam tips: - Use Event Grid for reactive workflows and notifications (resource events, blob created, etc.), not for primary telemetry ingestion. - For many devices sending data: prefer IoT Hub (device identity + telemetry) or Event Hubs (stream ingestion). - If the requirement includes “correlate by device identifier,” think message properties + downstream partitioning/routing to storage. - When the destination is Blob Storage, expect an intermediate ingestion service plus a processor (Functions/Stream Analytics) or built-in routing (IoT Hub routing).

Question 5

You need to store the user agreements. Where should you store the agreement after it is completed?

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Question 6

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 develop a software as a service (SaaS) offering to manage photographs. Users upload photos to a web service which then stores the photos in Azure Storage Blob storage. The storage account type is General-purpose V2. When photos are uploaded, they must be processed to produce and save a mobile-friendly version of the image. The process to produce a mobile-friendly version of the image must start in less than one minute. You need to design the process that starts the photo processing. Solution: Trigger the photo processing from Blob storage events. Does the solution meet the goal?

Question 7

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 Service Bus. Configure a topic to receive the device data by using a correlation filter. Does the solution meet the goal?

Question 8

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 Notification Hub. Register all devices with the hub. Does the solution meet the goal?

Question 9

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 develop a software as a service (SaaS) offering to manage photographs. Users upload photos to a web service which then stores the photos in Azure Storage Blob storage. The storage account type is General-purpose V2. When photos are uploaded, they must be processed to produce and save a mobile-friendly version of the image. The process to produce a mobile-friendly version of the image must start in less than one minute. You need to design the process that starts the photo processing. Solution: Convert the Azure Storage account to a BlockBlobStorage storage account. Does the solution meet the goal?

Question 10

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 develop a software as a service (SaaS) offering to manage photographs. Users upload photos to a web service which then stores the photos in Azure Storage Blob storage. The storage account type is General-purpose V2. When photos are uploaded, they must be processed to produce and save a mobile-friendly version of the image. The process to produce a mobile-friendly version of the image must start in less than one minute. You need to design the process that starts the photo processing. Solution: Move photo processing to an Azure Function triggered from the blob upload. Does the solution meet the goal?

Question 11

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 12

You need to support the requirements for the Shipping Logic App. What should you use?

Question 13

You need to secure the Shipping Logic App. What should you use?

Question 14

You develop Azure solutions. You must connect to a No-SQL globally-distributed database by using the .NET API. You need to create an object to configure and execute requests in the database. Which code segment should you use?

Question 15

Question 16

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 develop Azure solutions. You must grant a virtual machine (VM) access to specific resource groups in Azure Resource Manager. You need to obtain an Azure Resource Manager access token. Solution: Use the Reader role-based access control (RBAC) role to authenticate the VM with Azure Resource Manager. Does the solution meet the goal?

Question 17

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 develop Azure solutions. You must grant a virtual machine (VM) access to specific resource groups in Azure Resource Manager. You need to obtain an Azure Resource Manager access token. Solution: Run the Invoke-RestMethod cmdlet to make a request to the local managed identity for Azure resources endpoint. Does the solution meet the goal?

Question 18

A company is implementing a publish-subscribe (Pub/Sub) messaging component by using Azure Service Bus. You are developing the first subscription application. In the Azure portal you see that messages are being sent to the subscription for each topic. You create and initialize a subscription client object by supplying the correct details, but the subscription application is still not consuming the messages. You need to ensure that the subscription client processes all messages. Which code segment should you use?

Analyse de la question

Core concept: This question tests how to consume messages from an Azure Service Bus Topic Subscription using the .NET client. In the legacy Microsoft.Azure.ServiceBus library, creating a SubscriptionClient only establishes connectivity and entity targeting; it does not start message processing. You must explicitly register a message pump (handler) or manually receive messages. Why the answer is correct: subscriptionClient.RegisterMessageHandler(ProcessMessagesAsync, messageHandlerOptions) starts the client-side message pump. It wires up an asynchronous callback (ProcessMessagesAsync) that is invoked whenever messages are available on the subscription. Without registering a handler (or calling ReceiveAsync in a loop), the application will appear “connected” but will never consume messages. RegisterMessageHandler also enables proper settlement patterns (Complete/Abandon/Dead-letter) depending on ReceiveMode and your handler logic. Key features / best practices: - Use MessageHandlerOptions to control concurrency (MaxConcurrentCalls) and error handling (ExceptionReceivedHandler). This is critical to ensure throughput and resiliency. - Ensure AutoComplete is set appropriately. If AutoComplete=false, your handler must call CompleteAsync(message.SystemProperties.LockToken) after successful processing, otherwise messages will be redelivered after the lock expires. - Handle transient failures and implement retry/backoff in the exception handler. This aligns with Azure Well-Architected Framework reliability principles. - Confirm the subscription has an appropriate rule/filter. By default, a subscription typically has a TrueFilter rule that matches all messages unless modified. Common misconceptions: Many developers assume that instantiating SubscriptionClient automatically begins receiving. It does not. Another confusion is around rules/filters: if messages are visible in the portal for the subscription, routing is working; the issue is on the consumer side (no receive loop/handler). Exam tips: For AZ-204, remember the pattern: create client + register handler (push model) OR create client + ReceiveAsync loop (pull model). If the question says the client is created correctly but no messages are consumed, the missing step is usually RegisterMessageHandler (or an explicit receive loop). Also note newer SDKs (Azure.Messaging.ServiceBus) use ServiceBusProcessor/ProcessMessageAsync, but this question’s API matches Microsoft.Azure.ServiceBus.

Question 19

(Sélectionnez 2)

You have a new Azure subscription. You are developing an internal website for employees to view sensitive data. The website uses Azure Active Directory (Azure AD) for authentication. You need to implement multifactor authentication for the website. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point.

Question 20

(Sélectionnez 2)

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.