Exam AZ-305 topic 4 question 81 discussion

D. Premium The Premium plan is the best fit for this scenario. It supports both longer execution times and event-driven scaling, which are the requirements specified in the question. Azure Functions on a Premium plan can run for a longer period, up to 60 minutes (or indefinitely if the host.json "functionTimeout" setting is null), making it suitable for the estimated request processing times of five to 20 minutes. The Premium plan also supports event-driven autoscaling. The Consumption plan supports event-driven autoscaling but only allows functions to run for up to 10 minutes, so it wouldn't support the estimated request processing times of five to 20 minutes. The Dedicated and App Service plans can run for a longer period, but they do not support event-driven autoscaling. The Dedicated plan is also the most costly option and should be used when you need the most control over the function app environment.

Got this on 14-Apr-2023

D is correct

Given Answer D is correct as per Scale-in behaviors Event-driven scaling automatically reduces capacity when demand for your functions is reduced. It does this by draining instances of their current function executions and then removes those instances. This behavior is logged as drain mode. The grace period for functions that are currently executing can extend up to 10 minutes for Consumption plan apps and up to 60 minutes for Premium plan apps. Event-driven scaling and this behavior don't apply to Dedicated plan apps. The following considerations apply for scale-in behaviors: For Consumption plan function apps running on Windows, only apps created after May 2021 have drain mode behaviors enabled by default. To enable graceful shutdown for functions using the Service Bus trigger, use version 4.2.0 or a later version of the https://learn.microsoft.com/en-us/azure/azure-functions/event-driven-scaling?tabs=azure-cli

https://learn.microsoft.com/en-us/azure/azure-functions/functions-scale#scale D is the answer.

D is the answer. https://learn.microsoft.com/en-us/azure/event-hubs/compare-tiers#features Premium Dynamic Partition scale out - Yes

App timeout duration for Comsumption plan is 5 mins default and Maximum is 10 mins. For dedicated and Premimum, it is 30 mins default and maximum is unlimited. Dedicated supports Autoscaling but cannot support event driven. Only Consumption and Premium supports Event driven autoscaling. So best suitable option is Premium

D. Premium

D it is...

Let's go with D - Mostly due to time based limits.

Only Dedicated and Premium have the matching timeout so we need to choose between A and D. Then as usual they let us guess what is hidden in the "Supports estimates of request processing runtimes". If it is "Predictive scaling and costs are required" then the correct answer is D as per https://learn.microsoft.com/en-us/azure/azure-functions/functions-scale#overview-of-plans

D looks like as per article provided by jose https://learn.microsoft.com/en-us/azure/azure-functions/functions-scale#timeout

Premium - consumption time is up to 30 minutes.

Think this should be B, consumption: The Consumption Plan is a serverless hosting plan that automatically scales the number of instances of your function based on the number of incoming events, which can help to optimize costs and ensure that your app can handle varying loads. Additionally, the Consumption Plan supports the ability to set a timeout for your functions, which can help to ensure that your app can handle estimates of request processing runtimes.