AZ-204 Free Practice Test

HOTSPOT - (Topic 8)
A company is developing a mobile app for field service employees using Azure App Service Mobile Apps as the backend.
The company’s network connectivity varies throughout the day. The solution must support offline use and synchronize changes in the background when the app is online app.
You need to implement the solution.
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.

Solution:
Box 1: var todoTable = client GetSyncTable()
To setup offline access, when connecting to your mobile service, use the method GetSyncTable instead of GetTable (example):
IMobileServiceSyncTable todoTable = App.MobileService.GetSyncTable(); / Box 2: await todoTable.PullAsync("allTodoItems",todo.Table.CreateQuery());
Your app should now use IMobileServiceSyncTable (instead of IMobileServiceTable) for
CRUD operations. This will save changes to the local database and also keep a log of the changes. When the app is ready to synchronize its changes with the Mobile Service, use the methods PushAsync and PullAsync (example):
await App.MobileService.SyncContext.PushAsync(); await todoTable.PullAsync();
References:
https://azure.microsoft.com/es-es/blog/offline-sync-for-mobile-services/

Does this meet the goal?

1. A. Yes
2. B. No

Correct Answer: A

- (Topic 8)
You are writing code to create and run an Azure Batch job. You have created a pool of compute nodes.
You need to choose the right class and its method to submit a batch job to the Batch service.
Which method should you use?

1. A. JobOperations.CreateJobO
2. B. CloudJob.Enable(IEnumerable)
3. C. CloudJob.CommitAsync(IEnumerable, CancellationToken)
4. D. JobOperations.EnableJob(String, IEnumerable)
5. E. JobOperations.EnableJobAsync(Strin
6. F. IEnumerable. CancellationToken)

Correct Answer: C
A Batch job is a logical grouping of one or more tasks. A job includes settings common to the tasks, such as priority and the pool to run tasks on. The app uses the BatchClient.JobOperations.CreateJob method to create a job on your pool.
The Commit method submits the job to the Batch service. Initially the job has no tasks.
{
CloudJob job = batchClient.JobOperations.CreateJob(); job.Id = JobId;
job.PoolInformation = new PoolInformation { PoolId = PoolId };
job.Commit();
}
References:
https://docs.microsoft.com/en-us/azure/batch/quick-run-dotnet

- (Topic 8)
You develop a REST API. You implement a user delegation SAS token to communicate
with Azure Blob storage.
The token is compromised. You need to revoke the token.
What are two possible ways to achieve this goal? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

1. A. Revoke the delegation keys
2. B. Delete the stored access policy.
3. C. Regenerate the account key.
4. D. Remove the role assignment for the security principle.

Correct Answer: AB
A: Revoke a user delegation SAS
To revoke a user delegation SAS from the Azure CLI, call the az storage account revoke- delegation-keys command. This command revokes all of the user delegation keys associated with the specified storage account. Any shared access signatures associated with those keys are invalidated.
B: To revoke a stored access policy, you can either delete it, or rename it by changing the signed identifier.
Changing the signed identifier breaks the associations between any existing signatures and the stored access policy. Deleting or renaming the stored access policy immediately effects all of the shared access signatures associated with it. D18912E1457D5D1DDCBD40AB3BF70D5D
Reference:
https://github.com/MicrosoftDocs/azure-docs/blob/master/articles/storage/blobs/storage-blob-user-delegationsas-create-cli.md
https://docs.microsoft.com/en-us/rest/api/storageservices/define-stored-access-policy#modifying-or-revoking-astored-access-policy

- (Topic 8)
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?

1. A. new Container(EndpointUri, PrimaryKey);
2. B. new Database(Endpoint, PrimaryKey);
3. C. new CosmosClient(EndpointUri, PrimaryKey);

Correct Answer: C
Example:
// Create a new instance of the Cosmos Client
this.cosmosClient = new CosmosClient(EndpointUri, PrimaryKey)
//ADD THIS PART TO YOUR CODE
await this.CreateDatabaseAsync();
Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/sql-api-get-started

- (Topic 8)
Your company purchases an Azure subscription and plans to migrate several on-premises virtual machines to Azure. You need to design the infrastructure required (or the Azure virtual machines solution. What should you include in the design?

1. A. the number of Azure Storage accounts
2. B. the settings of the Azure virtual networks
3. C. the size of the virtual machines
4. D. the number of Azure regions

Correct Answer: C