Microsoft Azure Developer Core Solutions (AZ-200) Free Practice Test
Question 1
You need to configure retries in the LoadUserDetails function in the Database class without impacting user experience.
What code should you insert on line DB07?
To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
What code should you insert on line DB07?
To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Correct Answer:
Explanation
Box 1: Policy
RetryPolicy retry = Policy
Handle<HttpRequestException>()
Retry(3);
The above example will create a retry policy which will retry up to three times if an action fails with an exception handled by the Policy.
Box 2: WaitAndRetryAsync(3,i => TimeSpan.FromMilliseconds(100* Math.Pow(2,i-1))); A common retry strategy is exponential backoff: this allows for retries to be made initially quickly, but then at progressively longer intervals, to avoid hitting a subsystem with repeated frequent calls if the subsystem may be struggling.
Example:
Policy
Handle<SomeExceptionType>()
WaitAndRetry(3, retryAttempt =>
TimeSpan.FromSeconds(Math.Pow(2, retryAttempt))
);
References:
https://github.com/App-vNext/Polly/wiki/Retry
Question 2
You are developing an Azure Function App by using Visual Studio. The app will process orders Queue Storage.
You need to review the Azure Function App code shown below.
You need to review the Azure Function App code shown below.
Correct Answer:
Explanation
Untitled
Question 3
You need to ensure that you can deploy the LabelMaker application.
How should you complete the CLI commands? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
How should you complete the CLI commands? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Correct Answer:
Explanation
Box 1: group
Create a resource group with the az group create command. An Azure resource group is a logical group in which Azure resources are deployed and managed.
The following example creates a resource group named myResourceGroup in the westeurope location.
az group create --name myResourceGroup --location westeurope
Box 2: CohoWinterLabelMaker
Use the resource group named, which is used in the second command.
Box 3: aks
The command az aks create, is used to create a new managed Kubernetes cluster.
Box 4: monitoring
Scenario: LabelMaker app
Azure Monitor Container Health must be used to monitor the performance of workloads that are deployed to Kubernetes environments and hosted on Azure Kubernetes Service (AKS).
You must use Azure Container Registry to publish images that support the AKS deployment.
Question 4
You implement Azure Redis Cache to allow .NET applications to store customer session data for cache clients. You have the following .NET Core class library. The class library defines lazyConnection as a static private variable as shown in the following code. (Line numbers are included for reference only.)
The method must update the database and invalidate the cache using the correct methods and parameters.
Operations mus'&e performed asynchronously wherever possible. You must ensure that the operation in the client application does not result in another client retrieving stale cache data.
You need to implement the code.
The method must update the database and invalidate the cache using the correct methods and parameters.
Operations mus'&e performed asynchronously wherever possible. You must ensure that the operation in the client application does not result in another client retrieving stale cache data.
You need to implement the code.
Correct Answer:
Explanation
Untitled
Question 5
You develop a microservice solution for a company.
The solution uses the Actor design pattern for all services including mappings, GPS, and communication. The mapping and communication systems must persist state on disk. The GPS system must persist state in-memory. All Actors must have a service replica count of three.
You need to implement code for the GPS system.
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.
The solution uses the Actor design pattern for all services including mappings, GPS, and communication. The mapping and communication systems must persist state on disk. The GPS system must persist state in-memory. All Actors must have a service replica count of three.
You need to implement code for the GPS system.
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.
Correct Answer:
Explanation
Example:
The state manager retrieval methods return a reference to an object in local memory. Modifying this object in local memory alone does not cause it to be saved durably. When an object is retrieved from the state manager and modified, it must be reinserted into the state manager to be saved durably.
[StatePersistence(StatePersistence.Persisted)]
class MyActor : Actor, IMyActor
{
public MyActor(ActorService actorService, ActorId actorId)
base(actorService, actorId)
{
}
public Task SetCountAsync(int value)
{
return this.StateManager.SetStateAsync<int>("MyState", value);
}
}
References:
https://docs.microsoft.com/en-us/azure/service-fabric/service-fabric-reliable-actors-access-save-remove-state
Question 6
You need to construct the link to the summary report for the email that is sent to users.
What should you do?
What should you do?
Correct Answer: C
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. Determine whether the solution meets the stated goals.
You need to ensure that the SecurityPin security requirements are met.
Solution: Enable Always Encrypted for the SecurityPin column using a certificate contained in Azure Key Vault and grant the WebAppIdentity service principal access to the certificate.
Does the solution meet the goal?
You need to ensure that the SecurityPin security requirements are met.
Solution: Enable Always Encrypted for the SecurityPin column using a certificate contained in Azure Key Vault and grant the WebAppIdentity service principal access to the certificate.
Does the solution meet the goal?
Correct Answer: B