AZ-204 REVISION

To get the details of an Azure web app’s settings, which Azure CLI command should a developer execute?

• az webapp config appsettings show

• az webapp config appsettings display

• az webapp config appsettings list

• az webapp config appsettings set

Answer explanation

Explanation:

In order to get the details of an Azure web app’s settings, you run the az webapp config appsettings list command. The following is an example of this command:

az webapp config appsettings list --name MyWebapp --resource-group MyResourceGroup --subscription MySubscription

A developer has created a CDN profile and endpoint, but the content isn’t available on the CDN. Users who are trying to access the CDN URL receive an HTTP 404 status code. What are two possible causes of this?

• The file's origin isn't visible to the CDN.

• 
  The CDN is trying to serve unsupported file types

• 
  The file’s TTL (time-to-live) has expired.

• The host is rejecting the host header from the CDN

Answer explanation

Explanation:

There are several possible reasons the CDN URL might return an HTTP 404 status code:

• The file's origin isn't visible to the CDN.

• The endpoint is misconfigured, causing the CDN to look in the wrong place.

• The host is rejecting the host header from the CDN.

• The endpoint hasn't had time to propagate throughout the CDN.

.NET application logs can only be written to which of the following?

• The App Service file system

• Blob storage

• External storage

• Azure Storage account

• Azure SQL

Answer explanation

Explanation:

Currently only .NET application logs can be written to Blob storage. Java, PHP, Node.js, and Python application logs can only be stored on the App Service file system (without code modifications to write logs to external storage).

True or False: Static site hosting with Azure Storage natively supports HTTP and HTTPS for a custom domain?

• True

• False

Answer explanation

Explanation:

To map a custom domain with HTTPS enabled to a static website endpoint you must integrate the Azure Storage account with Azure CDN.

You need to scale out an individual App Service app independently of the App Service plan. How do you do this?

Choose all that apply:

• Run only one app in each App Service Plan

• Set -PerSiteScaling on the App Service Plan to true.

• Modify the number of instances on the App.

• Azure App Service does not support this scenario.

Answer explanation

Explanation:

You would enable per-app sharing at the app service plan level. Per-app scaling allows for scaling an app independently from the App Service plan that hosts it. This way, for example, an App Service plan can be scaled to 10 instances, but an app can be set to use only 5.

You are looking to create scale rules for your container group, which of the following scale rules are available for a container group in Azure Container Instances?

• CPU and memory

• Scaling is not available for container groups

• Service Bus Queue

• HTTP traffic

Answer explanation

Explanation:

Scaling isn’t currently available for containers or container groups in Azure Container Instances

Your team have an application using ASP.NET that has been configured to use Application Insights. You wish to take take control of the telemetry sampling rate by setting it yourselves within the application. Which of the following will achieve your goal?

• In the ApplicationInsights.config file disable adaptive sampling and add a configuration to enable fixed-rate sampling

• In the ApplicationInsights.config file enable fixed-rate sampling

• In the ApplicationInsights.config file disable adaptive sampling and add a configuration to enable ingestion sampling

• Set a data sampling percentage in the Usage and estimated costs pane of Application Insights in the Azure portal

Answer explanation

Explanation:

Adaptive sampling is on by default for ASP.NET applications, therefore to use fixed-rate sampling adaptive sampling must be disabled and then configuration of the fixed-rate sampling should be added. Setting a data sampling percentage in the Portal will only function if no other sampling has been configured.

You are developing a web application using JavaScript. You would like to enable client-side monitoring using Application Insights. Which of the following are ways you can enable client-side monitoring?

Choose two:

• 
  Add automatically from Visual Studio

• npm packages

• 
  SDK Loader Script

• NuGet packages.

Answer explanation

Explanation:

There are two methods available to enable Application Insights with the JavaScript SDK:

• SDK Loader Script

• npm package.

What is the default return value for an HTTP-triggered function in Azure Functions runtime 2.x and higher?

• HTTP 200 OK

• HTTP 200 No Content

• HTTP 200

• HTTP 200 Received

Answer explanation

Explanation:

The default return value for an HTTP-triggered function is HTTP 204 No Content with an empty body in Azure Functions runtime 2.x and higher.

A team wants to take advantage of Azure Cosmos DB’s global distribution. Which of the following is the optional parameter the team would set to specify the preferred location list when initializing a connection using the SQL SDK?

• CurrentLocations

• ApplicationPreferredRegions

• ApplicaitonDefaultLocations

• DesiredLocations

Answer explanation

Explanation:

A preference list is specified when initializing a connection using the SQL SDKs. The .NET SDK V3 accepts the optional parameter ApplicationPreferredRegions, which is an ordered list of Azure regions. All reads are sent to the first available region in the ApplicationPreferredRegions list. If a request fails, the client fails down the list to the next region, and so on. The following C# code sample demonstrates this:

CosmosClientOptions options = new CosmosClientOptions();
options.ApplicationName = "MyApp";
options.ApplicationPreferredRegions = new List {Regions.WestUS, Regions.WestUS2}; 

CosmosClient client = new CosmosClient(connectionString, options);