Microsoft AZ-204 Online Practice Questions and Exam Preparation

Microsoft AZ-204 Online Questions & Answers

• Question 171:

  DRAG DROP

  You are developing an ASP.NET Core website that can be used to manage photographs which are stored in Azure Blob Storage containers.

  Users of the website authenticate by using their Azure Active Directory (Azure AD) credentials.

  You implement role-based access control (RBAC) role permissions on the containers that store photographs. You assign users to RBAC roles.

  You need to configure the website's Azure AD Application so that user's permissions can be used with the Azure Blob containers.

  How should you configure the application? To answer, drag the appropriate setting to the correct location. Each setting can 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:

  

  

  ---

  Box 1: user_impersonation

  Box 2: delegated

  Example:

  1. Select the API permissions section 2. Click the Add a permission button and then:

  Ensure that the My APIs tab is selected 3. In the list of APIs, select the API TodoListService-aspnetcore.

  4. In the Delegated permissions section, ensure that the right permissions are checked: user_impersonation.

  5. Select the Add permissions button.

  Box 3: delegated

  Example 1. Select the API permissions section

  2. Click the Add a permission button and then, Ensure that the Microsoft APIs tab is selected 3. In the Commonly used Microsoft APIs section, click on Microsoft Graph

  4. In the Delegated permissions section, ensure that the right permissions are checked: User.Read. Use the search box if necessary.

  5. Select the Add permissions button

  https://docs.microsoft.com/en-us/samples/azure-samples/active-directory-dotnet-webapp-webapi-openidconnect-aspnetcore/calling-a-web-api-in-an-aspnet-core-web-application-using-azure-ad/

• Question 172:

  You are designing a web application to manage user satisfaction surveys. The number of questions that a survey includes is variable.

  Application users must be able to display results for a survey as quickly as possible. Users must also be able to quickly compute statistical measures including average values across various groupings of answers.

  Which Azure Cosmos 06 API should you use for the application?

  A. Core
  B. Mongo DB
  C. Gremlin
  D. Table API
  D. Table API

• Question 173:

  HOTSPOT

  You need to correct the VM issues.

  Which tools should you use? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  

  

  ---

  Box 1: Azure Backup

  The VM is critical and has not been backed up in the past. The VM must enable a quick restore from a 7-day snapshot to include in-place restore of disks in case of failure.

  In-Place restore of disks in IaaS VMs is a feature of Azure Backup.

  Performance: Accelerated Networking

  Scenario: The VM shows high network latency, jitter, and high CPU utilization.

  Box 2: Accelerated networking

  The VM shows high network latency, jitter, and high CPU utilization.

  Accelerated networking enables single root I/O virtualization (SR-IOV) to a VM, greatly improving its networking performance. This high-performance path bypasses the host from the datapath, reducing latency, jitter, and CPU utilization, for use with the most demanding network workloads on supported VM types.

  https://azure.microsoft.com/en-us/blog/an-easy-way-to-bring-back-your-azure-vm-with-in-place-restore/

• Question 174:

  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:

  1. Queue size must not grow larger than 80 gigabytes (GB).

  2. Use first-in-first-out (FIFO) ordering of messages.

  3. 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 Function App that uses an Azure Service Bus Queue trigger.

  Does the solution meet the goal?

  A. Yes
  B. No
  A. Yes

  ---

  Explanation

  You can create a function that is triggered when messages are submitted to an Azure Storage queue.

  https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-storage-queue-triggered-function

• Question 175:

  HOTSPOT

  You are creating an app that uses Event Grid to connect with other services. Your app's event data will be sent to a serverless function that checks compliance. This function is maintained by your company.

  You write a new event subscription at the scope of your resource. The event must be invalidated after 3 specific period of time. You need to configure Event Grid to ensure security.

  What should you implement? To answer, select the appropriate options in the answer area;

  NOTE: Each correct selection is worth one point

  

  

  ---

  Box 1: SAS tokens

  Custom topics use either Shared Access Signature (SAS) or key authentication.

  Microsoft recommends SAS, but key authentication provides simple programming, and is compatible with many existing webhook publishers.

  In this case we need the expiration time provided by SAS tokens.

  Box 2: ValidationCode handshake

  Event Grid supports two ways of validating the subscription: ValidationCode handshake (programmatic) and ValidationURL handshake (manual).

  If you control the source code for your endpoint, this method is recommended.

  Incorrect Answers:

  ValidationURL handshake (manual): In certain cases, you can't access the source code of the endpoint to implement the ValidationCode handshake. For example, if you use a third-party service (like Zapier or IFTTT), you can't programmatically respond with the validation code.

  References:

  https://docs.microsoft.com/en-us/azure/event-grid/security-authentication

• Question 176:

  You are developing a mobile instant messaging app for a company.

  The mobile app must meet the following requirements:

  Support offline data sync.

  Update the latest messages during normal sync cycles.

  You need to implement Offline Data Sync.

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

  NOTE: Each correct selection is worth one point.

  A. Retrieve records from Offline Data Sync on every call to the PullAsync method.
  B. Retrieve records from Offline Data Sync using an Incremental Sync.
  C. Push records to Offline Data Sync using an Incremental Sync.
  D. Return the updatedAt column from the Mobile Service Backend and implement sorting by using the column.
  E. Return the updatedAt column from the Mobile Service Backend and implement sorting by the message id.
  B. Retrieve records from Offline Data Sync using an Incremental Sync.
  E. Return the updatedAt column from the Mobile Service Backend and implement sorting by the message id.

  ---

  Explanation

  B:

  Incremental Sync: the first parameter to the pull operation is a query name that is used only on the client. If you use a non-null query name, the Azure Mobile SDK performs an incremental sync. Each time a pull operation returns a set of results, the latest updatedAt timestamp from that result set is stored in the SDK local system tables. Subsequent pull operations retrieve only records after that timestamp.

  E (not D): To use incremental sync, your server must return meaningful updatedAt values and must also support sorting by this field. However, since the SDK adds its own sort on the updatedAt field, you cannot use a pull query that has its own orderBy clause.

  References:

  https://docs.microsoft.com/en-us/azure/app-service-mobile/app-service-mobile-offline-data-sync

• Question 177:

  You are developing a mobile app that uses an API which stores geospabal data in Azure Cosmos D& The app will be used to find restaurants in a particular area and related information including food types, menu information and the optimal route to a selected restaurant from the user's current location.

  Which Azure Cosmos DB API should you use for the API?

  A. MongoDB
  B. Gremlin
  C. Cassandra
  D. Core
  A. MongoDB

• Question 178:

  HOTSPOT

  You are developing a containerized microservices application to be deployed by using Azure Container Apps. The application uses Dapr for service invocation between microservices.

  You develop two services: OrderService and PaymentService.

  OrderService must invoke a method named ProcessPayment on PaymentService.

  You need to invoke the method.

  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.

  

  

• Question 179:

  You are developing an online game that includes a feature that allows players to interact with other players on the same team within a certain distance. The calculation to determine the players in range occurs when players move and are cached in an Azure Cache for Redis instance.

  The system should prioritize players based on how recently they have moved and should not prioritize players who have logged out of the game.

  You need to select an eviction policy.

  Which eviction policy should you use?

  A. allkeys-Iru
  B. volatile-Iru
  C. allkeys-lfu
  D. volatile-ttl
  A. allkeys-Iru

  ---

  Explanation

  allkeys-lru: Keeps most recently used keys; removes least recently used (LRU) keys

  In general, as a rule of thumb: Use the allkeys-lru policy when you expect a power-law distribution in the popularity of your requests. That is, you expect a subset of elements will be accessed far more often than the rest. This is a good pick if you are unsure.

  Incorrect:

  volatile-lru: Removes least recently used keys with the expire field set to true. volatile-lfu: Removes least frequently used keys with the expire field set to true. volatile-ttl: Removes keys with expire field set to true and the shortest remaining time-to-live (TTL) value.

  Use the volatile-ttl if you want to be able to provide hints to Redis about what are good candidate for expiration by using different TTL values when you create your cache objects.

  https://redis.io/docs/manual/eviction/

• Question 180:

  DRAG DROP

  You develop a web app that uses tier D1 app service plan by using the Web Apps feature of Microsoft Azure App Service.

  Spikes in traffic have caused increases in page load times.

  You need to ensure that the web app automatically scales when CPU load is about 85 percent and minimize costs.

  Which four actions should you perform in sequence? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

  NOTE: More than one order of answer choices is correct. You will receive credit for any of the correct orders you select.

  Select and Place:

  

  

  ---

  Step 1: Configure the web app to the Standard App Service Tier

  The Standard tier supports auto-scaling, and we should minimize the cost.

  Step 2: Enable autoscaling on the web app First enable autoscale

  Step 3: Add a scale rule

  Step 4: Add a Scale condition

  https://docs.microsoft.com/en-us/azure/monitoring-and-diagnostics/monitoring-autoscale-get-started

  https://azure.microsoft.com/en-us/pricing/details/app-service/plans/