- (Exam Topic 8)
You develop a containerized application. You plan to deploy the application to a new Azure Container instance by using a third-party continuous integration and continuous delivery (CI/CD) utility.
The deployment must be unattended and include all application assets. The third-party utility must only be able to push and pull images from the registry. The authentication must be managed by Azure Active Directory (Azure AD). The solution must use the principle of least privilege.
You need to ensure that the third-party utility can access the registry.
Which authentication options should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Solution:
Graphical user interface, text, application, table Description automatically generated
Box 1: Service principal
Applications and container orchestrators can perform unattended, or "headless," authentication by using an Azure Active Directory (Azure AD) service principal.
Box 2: AcrPush
AcrPush provides pull/push permissions only and meets the principle of least privilege. Reference:
https://docs.microsoft.com/en-us/azure/container-registry/container-registry-authentication?tabs=azure-cli https://docs.microsoft.com/en-us/azure/container-registry/container-registry-roles?tabs=azure-cli
Does this meet the goal?
Correct Answer:
A
- (Exam Topic 8)
You are developing a solution that will use a multi-partitioned Azure Cosmos DB database. You plan to use the latest Azure Cosmos DB SDK for development.
The solution must meet the following requirements:
Send insert and update operations to an Azure Blob storage account. Process changes to all partitions immediately. Allow parallelization of change processing.
You need to process the Azure Cosmos DB operations.
What are two possible ways to achieve this goal? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.
Correct Answer:
CD
Azure Functions is the simplest option if you are just getting started using the change feed. Due to its
simplicity, it is also the recommended option for most change feed use cases. When you create an Azure Functions trigger for Azure Cosmos DB, you select the container to connect, and the Azure Function gets triggered whenever there is a change in the container. Because Azure Functions uses the change feed processor behind the scenes, it automatically parallelizes change processing across your container's partitions.
Note: You can work with change feed using the following options: Using change feed with Azure Functions Using change feed with change feed processor Reference:
https://docs.microsoft.com/en-us/azure/cosmos-db/read-change-feed https://docs.microsoft.com/en-us/azure/cosmos-db/change-feed-pull-model https://docs.microsoft.com/en-us/azure/cosmos-db/read-change-feed#azure-functions
https://docs.microsoft.com/en-us/azure/cosmos-db/change-feed-pull-model#using-feedrange-for-parallelization
- (Exam 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?
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
- (Exam Topic 5)
You need to resolve the capacity issue.
What should you do?
Correct Answer:
D
If you want to read the files in parallel, you cannot use forEach. Each of the async callback function calls does return a promise. You can await the array of promises that you'll get with Promise.all.
Scenario: Capacity issue: During busy periods, employees report long delays between the time they upload the receipt and when it appears in the web application.
Reference:
https://stackoverflow.com/questions/37576685/using-async-await-with-a-foreach-loop
- (Exam Topic 8)
A company is developing a solution that allows smart refrigerators to send temperature information to a central location. You have an existing Service Bus.
The solution must receive and store message until they can be processed. You create an Azure Service Bus Instance by providing a name, pricing tier, subscription, resource group, and location.
You need to complete the configuration.
Which Azure CLI or PowerShell command should you run?
Correct Answer:
A
A service bus instance has already been created (Step 2 below). Next is step 3, Create a Service Bus queue. Note:
Steps:
Step 1: # Create a resource group resourceGroupName="myResourceGroup"
az group create --name $resourceGroupName --location eastus
Step 2: # Create a Service Bus messaging namespace with a unique name namespaceName=myNameSpace$RANDOM
az servicebus namespace create --resource-group $resourceGroupName --name $namespaceName --location eastus
Step 3: # Create a Service Bus queue
az servicebus queue create --resource-group $resourceGroupName --namespace-name $namespaceName
--name BasicQueue
Step 4: # Get the connection string for the namespace
connectionString=$(az servicebus namespace authorization-rule keys list --resource-group
$resourceGroupName --namespace-name $namespaceName --name RootManageSharedAccessKey --query primaryConnectionString --output tsv)
Reference:
https://docs.microsoft.com/en-us/azure/service-bus-messaging/service-bus-quickstart-cli