30 Questions
What is the benefit of using standard metrics over log-based metrics?
Pre-aggregated during collection for better query time performance
How can developers send events manually for log-based metrics?
By writing code that explicitly invokes the SDK
What is the purpose of the Application Insights blades in the Azure portal?
Act as an analytical and diagnostic tool for visualizing event-based data from logs
What kind of data analysis is log-based metrics superior for?
Ad-hoc diagnostics
What are some techniques used by Application Insights to reduce telemetry volume?
Sampling and filtering
How are pre-aggregated metrics stored in Application Insights?
As pre-aggregated time series with key dimensions
Which SDK version for.NET implements pre-aggregation of metrics during collection?
2.7 SDK or later
How does pre-aggregation of metrics benefit query time performance?
Retrieving data happens faster and requires less compute power
What is the impact of sampling and filtering on the accuracy of standard metrics sent by default?
The accuracy isn't affected by sampling or filtering
How does the Application Insights backend populate the new metrics for SDKs that don't implement pre-aggregation?
By aggregating the events received by the Application Insights event collection endpoint
How does ingestion sampling impact the accuracy of pre-aggregated metrics?
Ingestion sampling will never impact the accuracy of pre-aggregated metrics
What enables new scenarios such as near real-time alerting on dimensions of metrics and more responsive dashboards?
Pre-aggregated metrics
When is Auto-Instrumentation the preferred instrumentation method for monitoring Application Insights?
When no developer investment is required and source code access is not available
In what circumstances should the Application Insights SDK be installed?
To monitor web app, background components, and JavaScript within web pages, regardless of hosting in Azure
Which technology is natively supported for distributed tracing by Application Insights SDKs?
.NET Core
What is the purpose of installing a small instrumentation package in your app when using the Application Insights SDK?
To direct telemetry data to an Application Insights resource using a unique token
What is the purpose of availability tests in Application Insights?
To monitor the availability and responsiveness of web applications or websites
How many types of availability tests are available in Application Insights?
Three
What can be tested using availability tests in Application Insights?
HTTP or HTTPS endpoints accessible from the public internet
What can Application Insights do to monitor availability and responsiveness of a web app or website?
Send web requests at regular intervals from points around the world
What is a feature of the URL ping test (classic) in Application Insights?
Allows for retries and custom success criteria
What is a characteristic of the standard test (Preview) in Application Insights?
Includes SSL certificate validity and proactive lifetime check
How many availability tests can be created per Application Insights resource?
Up to 100
What is the preferred solution for multi-request or authentication test scenarios in Application Insights?
Custom TrackAvailability test
When using private DNS in availability tests, what is the recommended alternative if public domain name servers cannot resolve the domain names of the tested endpoints?
Use custom TrackAvailability tests
What method can be used to send the results of custom availability tests to Application Insights?
TrackAvailability() method
What does each node on the Application Map represent?
An application component or its dependencies with health KPI and alerts status
What triggers the discovery of components related to a specific component on the Application Map?
A set of queries triggered when first loading the application map
What are components in a distributed/microservices application?
Independently deployable parts of the application with code-level visibility or access to telemetry
How does the app map find components in a distributed application?
By following HTTP dependency calls made between servers with the Application Insights SDK installed
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