Exam AZ-204 topic 5 question 16 discussion

Based on the doc, I believe B is correct. https://docs.microsoft.com/en-us/azure/azure-monitor/app/availability-azure-functions

I think the answer should be URL Ping Test. It can send an alert when the website is unavailable or unresponsive. See test timeouts and alerts in the link. https://docs.microsoft.com/en-us/azure/azure-monitor/app/monitor-web-app-availability

The URL Ping will only log the response time if the timeout is reached. To always monitor it, the trackavailability method shall be used. It's nuanced, but I think this is the differentiator.

Based on the information, creating a timer triggered function that calls TrackAvailability() and sends the results to Application Insights is the best option for monitoring the availability and responsiveness of the functions.

It has to be C - The URL ping test uses advanced HTTP request functionality to validate whether an endpoint is responding. They measure the performance associated with that response. They also add the ability to set custom success criteria, coupled with more advanced features like parsing dependent requests and allowing for retries. https://docs.microsoft.com/en-us/azure/azure-monitor/app/monitor-web-app-availability#actions-if-you-see-failures

Adding a new diagnostic setting (Option D) can enable logging for the Azure Function app, but it will not provide the ability to monitor the availability and responsiveness of the REST API endpoints or generate an alert when they are unavailable or responding too slowly.

Creating a timer triggered function (Option B or C) can also be used to call the REST API endpoints and report the results to Application Insights. However, this approach requires additional development effort and maintenance overhead, which is not necessary for this scenario. Moreover, it will not provide an immediate alert when the function endpoints are unavailable or responding too slowly.

the best option is to create a URL ping test to monitor the availability and responsiveness of the REST API endpoints. This can be easily configured in Azure Application Insights with minimal effort and can provide immediate alerts when the endpoints are unavailable or responding too slowly.

its B........

B is correct

A - Because the URL ping test automatically measures availability and response times.

B is correct answer. https://docs.microsoft.com/en-us/azure/azure-monitor/app/availability-azure-functions

"You need to monitor the availability and responsiveness of the functions." You want it to be on application insights

"You need to monitor the availability and responsiveness of the functions." You want it to be on application insights

I would go with A - URL Ping satisfy all the requirements. It does not check SSL validity BUT there is no requirement to do so, buddies https://docs.microsoft.com/en-us/azure/azure-monitor/app/availability-standard-tests

This scenario does not make any sense. Consumption plans are not intended for high availability because the app may scale to zero when idle which may will leads to cold start of some minute(s) so it makes no sense to monitor it for availability. With URL Ping, you will pay for the compute resources generated by your monitoring request to your URL Ping which makes this option ridiculous with consumption plan. But monitoring your application with an URL Ping might keep your function app up and running if this is what you expect :D The option B is the less worse but keep in mind that consumption plan are not intended for high availability (does not need to be monitored). They are intended for asynchronous executions, even high workloads and parallel executions, which does not require to be highly available. For high availability, choose Premium/Dedicated plans.

I guess an SSL validity check is required. URL ping does not provide this feature. There is no Standard test option. So then, option B is the only one that is viable.