AZ-204 Connect to and consume Azure services and third-party services Practice Test 7 — 15 Questions

Question 1

An application calls a Event Grid event stream through HTTP. The developer must implement retries without overwhelming the remote system during partial outages. Which retry pattern is best?

Accepted Answer

Exponential backoff with jitter and a maximum retry limit. Exponential backoff with jitter and a maximum retry limit is the best pattern because it prevents overwhelming the Event Grid endpoint during partial outages by progressively increasing wait times between retries, while jitter randomizes those intervals to avoid thundering herd problems. The maximum retry limit ensures the system does not retry indefinitely, aligning with Event Grid's own retry policy (which uses exponential backoff up to 30 minutes and a max of 30 retries for HTTP 5xx errors). This balances resilience with resource protection.

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Immediate infinite retries

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Retry only after restarting the application

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Disable all timeout settings

Question 2

An application publishes order events that multiple independent subscribers must process. Subscribers may be added later without changing the publisher. Which Azure messaging service should be used? The architecture review board prefers a managed Azure-native control.

Accepted Answer

Azure Service Bus topic. Azure Service Bus topics support a publish-subscribe pattern where multiple independent subscribers can process the same message. Subscribers can be added later without modifying the publisher, and each subscriber receives its own copy of the message through subscriptions. This matches the requirement for order events that must be processed by multiple independent subscribers.

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Azure Blob Storage lifecycle policy

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Azure Storage Queue

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Azure Cache for Redis list only

Question 3

A system receives high-volume event notifications from Azure resources and routes them to serverless handlers. Events are lightweight and should use native event routing. Which service should be used? The architecture review board prefers a managed Azure-native control.

Accepted Answer

Azure Event Grid. Azure Event Grid is the correct choice because it is a fully managed event routing service designed for high-volume, lightweight event notifications using native event routing (HTTP push). It directly supports Azure resource events and serverless handlers like Azure Functions, aligning with the requirement for native event routing without polling or queuing overhead.

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Azure DNS

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Azure Files

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Azure Service Bus queue

Question 4

A developer exposes several backend APIs through Azure API Management. Clients must be throttled by subscription to protect the backend. What should be configured?

Accepted Answer

API Management rate-limit or quota policy. Azure API Management provides built-in rate-limit and quota policies that allow you to throttle client requests based on the subscription key. This directly protects backend services from excessive traffic by enforcing per-subscription call rates and quotas, which aligns with the requirement to throttle clients by subscription.

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Blob soft delete

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Application Insights sampling

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Private DNS zone only

Question 5

An application calls a Service Bus topic through HTTP. The developer must implement retries without overwhelming the remote system during partial outages. Which retry pattern is best?

Accepted Answer

Exponential backoff with jitter and a maximum retry limit. Exponential backoff with jitter and a maximum retry limit is the best pattern because it progressively increases the delay between retries, preventing the client from overwhelming the Service Bus topic during partial outages. The jitter randomizes the delay to avoid thundering herd problems, while the maximum retry limit ensures the system doesn't retry indefinitely, aligning with Azure's recommended retry guidance for HTTP-based calls to Service Bus.

Answer

Disable all timeout settings

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Immediate infinite retries

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Retry only after restarting the application

Question 6

An application publishes order events that multiple independent subscribers must process. Subscribers may be added later without changing the publisher. Which Azure messaging service should be used? The team wants the control to be enforceable during normal operations.

Accepted Answer

Azure Service Bus topic. Azure Service Bus topics support a publish/subscribe pattern where multiple independent subscribers can each receive a copy of every published message. Subscribers can be added later without modifying the publisher, and the team can enforce control during normal operations using topic-level authorization rules and subscription filters.

Answer

Azure Blob Storage lifecycle policy

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Azure Storage Queue

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Azure Cache for Redis list only

Question 7

Three analytics pipelines each need to read every event from the same Azure Event Hub: one pipeline archives events to cold storage, one computes real-time aggregations, and one feeds a machine learning model. How should the developer configure Event Hubs to allow all three to consume independently without interfering with each other?

Accepted Answer

Create a separate consumer group for each pipeline; each group tracks its own offset independently. A is correct because each consumer group in Event Hubs maintains its own independent offset and checkpoint, allowing multiple consumers to read the same event stream without interfering. By creating a separate consumer group for each pipeline (archival, real-time aggregation, ML), each pipeline can process events at its own pace and from its own position in the stream, ensuring no consumer's progress affects another.

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Create three separate Event Hubs in the same namespace and replicate events between them with Event Hubs Capture

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Use a single consumer group and route events to different pipelines by partition key prefix

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Enable Event Hubs Capture for all three pipelines so they read from the captured Avro files in storage instead of the Event Hub directly

Question 8

Messages failing to process are redelivered by Azure Service Bus. After a message has been delivered and abandoned the maximum number of times (MaxDeliveryCount), where does Service Bus move the message?

Accepted Answer

The message is moved to the dead-letter sub-queue of the original queue. When a message in Azure Service Bus is delivered and abandoned the maximum number of times (as defined by the MaxDeliveryCount property, default 10), the message is automatically moved to the dead-letter sub-queue of the original queue. This dead-letter sub-queue stores messages that cannot be processed successfully, allowing you to inspect and handle them separately without losing the message entirely.

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The message is permanently deleted from the queue

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The message is returned to the front of the queue with its DeliveryCount reset to zero

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The message expires and is discarded according to the Time-to-Live setting

Question 9

Backend APIs exposed through Azure API Management are consumed by multiple subscribers. The product owner wants to prevent any single subscriber from sending more than 100 requests per minute, while allowing subscribers with heavier plans to have higher limits configured separately. Which APIM policy implements per-subscriber rate limiting?

Accepted Answer

Apply the rate-limit-by-key policy using the subscription key as the counter key, with calls set to 100 and renewal-period to 60. The `rate-limit-by-key` policy in Azure API Management enforces a per-key rate limit, and using the subscription key as the counter key ensures each subscriber is limited individually. The `calls` parameter set to 100 and `renewal-period` to 60 seconds matches the requirement of 100 requests per minute per subscriber, while allowing different limits for different plans by applying separate policies with different call counts.

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Apply the quota policy to the product with a total of 100 calls per minute shared across all subscribers

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Apply an ip-filter policy that blocks IP addresses making more than 100 requests per minute

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Configure a backend circuit breaker policy to return cached responses after 100 calls

Question 10

The mobile app team needs to send push notifications to 10 million devices running both iOS and Android. On iOS, notifications go through Apple Push Notification service (APNs); on Android, through Firebase Cloud Messaging (FCM). The team wants a single Azure service that abstracts platform differences and scales without managing separate APNs and FCM integrations per platform. Which service should they use?

Accepted Answer

Azure Notification Hubs with APNs and FCM credentials configured in the hub namespace. Azure Notification Hubs is the correct choice because it is a fully managed push notification service designed to abstract platform-specific notification systems like APNs (iOS) and FCM (Android). By configuring the APNs and FCM credentials in the hub namespace, the team can send a single notification that is automatically routed to the correct platform service, scaling to millions of devices without managing separate integrations.

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Azure Service Bus with topics — one subscription per platform, each subscription delivering to APNs or FCM

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Azure Event Grid with a custom endpoint handler per platform that calls APNs or FCM directly

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Azure Communication Services email with HTML-formatted alerts sent to device email addresses

Question 11

A business process requires sending an approval email, waiting up to 48 hours for a manager's response, and then updating a SharePoint list based on the decision. The process owner has no programming experience and wants to build this without writing code. Which Azure service is the most appropriate?

Accepted Answer

Azure Logic Apps with the Office 365 Outlook approval action and the SharePoint connector. Azure Logic Apps is the correct choice because it provides a no-code/low-code designer that allows the process owner to visually build the approval workflow using the Office 365 Outlook 'Send approval email' action and the SharePoint connector to update the list. This fully meets the requirement of no programming experience while handling the 48-hour wait and conditional update.

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Azure Durable Functions with the Human Interaction pattern using a timer and event listener

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Azure Data Factory with a Copy Activity pipeline triggered by an Azure Function

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Azure Event Grid with a custom webhook handler that calls the SharePoint REST API

Question 12

Arrange the steps to deploy a containerized application to Azure Container Instances (ACI) from Azure Container Registry (ACR) in the correct order.

Accepted Answer

Create an Azure Container Registry, push the container image to the registry, create a container group in Azure Container Instances, configure the container group settings, then start the container group.. First create ACR, push image, create container group, configure settings, then start.

Answer

Push the container image, create an Azure Container Registry, create a container group, configure settings, then start.

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Create a container group, create an Azure Container Registry, push the container image, configure settings, then start.

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Create an Azure Container Registry, create a container group, push the container image, configure settings, then start.

Question 13

Arrange the steps to implement Azure Blob Storage lifecycle management to archive blobs after 30 days in the correct order.

Accepted Answer

Create storage account and container, then upload blobs, then navigate to Lifecycle Management, then add a rule with action to archive after 30 days.. First create storage and container, upload blobs, navigate to lifecycle, add rule with actions.

Answer

Upload blobs first, then create storage account and container, then navigate to Lifecycle Management, then add a rule.

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Create storage account and container, then navigate to Lifecycle Management, then add a rule, then upload blobs.

Answer

Navigate to Lifecycle Management first, then create storage account and container, then upload blobs, then add a rule.

Question 14

Match each Azure DevOps component to its function.

Accepted Answer

Azure Boards: Manage work items, user stories, and bugs.. Correct matches: Azure Boards tracks work items, Azure Repos hosts source code, Azure Pipelines automates builds and deployments. Common confusions include mixing up Boards with Repos, or Repos with Pipelines.

Answer

Azure Boards: Store and version source code.

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Azure Repos: Build, test, and deploy to any platform.

Question 15

A company uses Azure Functions with an HTTP trigger and Azure Cosmos DB. They need to securely store connection strings for Cosmos DB and rotate them automatically every 90 days. Which service should they use?

Accepted Answer

Azure Key Vault. Azure Key Vault is the correct service because it provides a centralized, secure store for secrets like connection strings and supports automatic rotation policies. By storing the Cosmos DB connection string in Key Vault and configuring a rotation policy (e.g., every 90 days), the Azure Function can retrieve the latest secret at runtime via a Key Vault reference in its application settings, ensuring the secret is rotated without code changes or downtime.

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Managed Identity

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Azure App Configuration

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Microsoft Entra ID