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Application Insights for apps in Azure - Interactive Code Practice

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Practice - 5 Tasks
Answer the questions below
1fill in blank
easy

Complete the code to create an Application Insights resource in Azure using ARM template syntax.

Azure
{
  "type": "Microsoft.Insights/components",
  "apiVersion": "2015-05-01",
  "name": "myAppInsights",
  "location": "eastus",
  "properties": {
    "Application_Type": [1]
  }
}
Drag options to blanks, or click blank then click option'
A"function"
B"database"
C"mobile"
D"web"
Attempts:
3 left
💡 Hint
Common Mistakes
Using an incorrect application type like "database" or "mobile" for a web app.
Omitting quotes around the application type.
2fill in blank
medium

Complete the Azure CLI command to create an Application Insights resource named 'myAppInsights' in the 'eastus' region.

Azure
az monitor app-insights component create --app myAppInsights --application-type web --location [1] --resource-group myResourceGroup
Drag options to blanks, or click blank then click option'
Acentralus
Beastus
Cwestus
Dnorthcentralus
Attempts:
3 left
💡 Hint
Common Mistakes
Selecting a region different from the intended deployment location.
Misspelling the region name.
3fill in blank
hard

Fix the error in the Application Insights instrumentation key assignment in this Python snippet.

Azure
from applicationinsights import TelemetryClient

instrumentation_key = [1]
tc = TelemetryClient(instrumentation_key)
tc.track_event('TestEvent')
tc.flush()
Drag options to blanks, or click blank then click option'
A"12345-abcde-67890-fghij"
B12345-abcde-67890-fghij
CNone
Dinstrumentation_key
Attempts:
3 left
💡 Hint
Common Mistakes
Using the key without quotes causing a syntax error.
Assigning None or a variable name instead of the actual key string.
4fill in blank
hard

Fill both blanks to configure Application Insights telemetry in a Node.js app using the official SDK.

Azure
const appInsights = require('applicationinsights');
appInsights.[1]('[2]').start();
Drag options to blanks, or click blank then click option'
Asetup
Bstart
C12345678-1234-1234-1234-123456789abc
DdefaultClient
Attempts:
3 left
💡 Hint
Common Mistakes
Using start instead of setup for initialization.
Passing an incorrect property name instead of the instrumentation key.
5fill in blank
hard

Fill all three blanks to create a custom event with properties using Application Insights in C#.

Azure
var telemetryClient = new TelemetryClient();
var properties = new Dictionary<string, string> {{ [1] }};
properties.Add("User", [2]);
telemetryClient.TrackEvent([3], properties);
Drag options to blanks, or click blank then click option'
A"User", "Alice"
B"User"
C"CustomEvent"
Dnew KeyValuePair<string, string>
Attempts:
3 left
💡 Hint
Common Mistakes
Not initializing the dictionary correctly.
Using incorrect event name or property keys.

Practice

(1/5)
1. What is the main purpose of Azure Application Insights?
easy
A. To monitor the health and usage of applications
B. To create virtual machines in Azure
C. To store large amounts of data
D. To manage user identities and access

Solution

  1. Step 1: Understand Application Insights role

    Application Insights is designed to monitor apps by collecting data about their performance and usage.
  2. Step 2: Compare with other Azure services

    Other options like virtual machines, data storage, or identity management are handled by different Azure services.
  3. Final Answer:

    To monitor the health and usage of applications -> Option A
  4. Quick Check:

    Monitoring apps = To monitor the health and usage of applications [OK]
Hint: Think monitoring and diagnostics for apps [OK]
Common Mistakes:
  • Confusing Application Insights with storage services
  • Mixing it up with Azure Active Directory
  • Assuming it creates or manages infrastructure
2. Which of the following is the correct way to enable Application Insights in an Azure Web App?
easy
A. Create a virtual machine and install Application Insights manually
B. Add Application Insights SDK and configure instrumentation key
C. Enable Azure Monitor logs only
D. Use Azure Blob Storage to store telemetry data

Solution

  1. Step 1: Identify how to enable Application Insights

    Enabling Application Insights requires adding its SDK to the app and setting the instrumentation key for telemetry.
  2. Step 2: Eliminate incorrect options

    Creating VMs or using Blob Storage does not enable Application Insights. Azure Monitor logs are related but separate.
  3. Final Answer:

    Add Application Insights SDK and configure instrumentation key -> Option B
  4. Quick Check:

    SDK + instrumentation key = Add Application Insights SDK and configure instrumentation key [OK]
Hint: SDK plus key enables monitoring [OK]
Common Mistakes:
  • Thinking Application Insights runs on VMs only
  • Confusing Azure Monitor logs with Application Insights
  • Using storage services for telemetry data
3. Given this snippet in an Azure Function app:
var telemetryClient = new TelemetryClient();
telemetryClient.TrackEvent("OrderPlaced");

What will Application Insights record?
medium
A. An error log with message 'OrderPlaced'
B. A performance metric for function execution time
C. An event named 'OrderPlaced' in the telemetry data
D. No data because TelemetryClient is not initialized

Solution

  1. Step 1: Understand TrackEvent method

    TrackEvent sends a custom event named as the string argument to Application Insights.
  2. Step 2: Check the code behavior

    The code creates a TelemetryClient and tracks an event called 'OrderPlaced', so this event will be recorded.
  3. Final Answer:

    An event named 'OrderPlaced' in the telemetry data -> Option C
  4. Quick Check:

    TrackEvent sends event = An event named 'OrderPlaced' in the telemetry data [OK]
Hint: TrackEvent logs custom events [OK]
Common Mistakes:
  • Assuming TrackEvent logs errors
  • Thinking it measures performance automatically
  • Believing TelemetryClient needs extra setup to send events
4. You added Application Insights to your app but see no telemetry data in the Azure portal. What is the most likely cause?
medium
A. Application Insights service is not available in your region
B. Azure subscription is expired
C. You need to restart the Azure portal
D. Instrumentation key is missing or incorrect in app configuration

Solution

  1. Step 1: Check telemetry data flow requirements

    Telemetry requires the correct instrumentation key configured in the app to send data to Application Insights.
  2. Step 2: Evaluate other options

    Subscription expiry or service region issues would cause broader failures, and restarting the portal does not affect telemetry data.
  3. Final Answer:

    Instrumentation key is missing or incorrect in app configuration -> Option D
  4. Quick Check:

    Missing key blocks telemetry = Instrumentation key is missing or incorrect in app configuration [OK]
Hint: Check instrumentation key first [OK]
Common Mistakes:
  • Restarting portal expecting data to appear
  • Assuming regional availability blocks telemetry silently
  • Ignoring app configuration settings
5. You want to monitor a multi-service app with Application Insights and correlate requests across services. What should you do?
hard
A. Enable distributed tracing and use the same Application Insights resource for all services
B. Create separate Application Insights resources for each service without linking
C. Use Azure Monitor logs only without Application Insights
D. Send telemetry data manually to a storage account

Solution

  1. Step 1: Understand distributed tracing in Application Insights

    Distributed tracing allows tracking requests across multiple services by sharing context and using the same Application Insights resource.
  2. Step 2: Compare options for multi-service monitoring

    Using separate resources without linking breaks correlation. Azure Monitor logs alone do not provide this tracing. Manual telemetry to storage lacks correlation features.
  3. Final Answer:

    Enable distributed tracing and use the same Application Insights resource for all services -> Option A
  4. Quick Check:

    Distributed tracing + shared resource = Enable distributed tracing and use the same Application Insights resource for all services [OK]
Hint: Use distributed tracing with shared resource [OK]
Common Mistakes:
  • Splitting telemetry into unlinked resources
  • Ignoring distributed tracing setup
  • Relying only on logs without correlation