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Exam DP-201 topic 2 question 41 discussion

Actual exam question from Microsoft's DP-201

Question #: 41
Topic #: 2

You are designing a real-time stream solution based on Azure Functions. The solution will process data uploaded to Azure Blob Storage.
The solution requirements are as follows:
✑ Support up to 1 million blobs.
✑ Scaling must occur automatically.
✑ Costs must be minimized.
What should you recommend?

A. Deploy the Azure Function in an App Service plan and use a Blob trigger.
B. Deploy the Azure Function in a Consumption plan and use an Event Grid trigger.
C. Deploy the Azure Function in a Consumption plan and use a Blob trigger.
D. Deploy the Azure Function in an App Service plan and use an Event Grid trigger.

Show Suggested Answer

Suggested Answer: C 🗳️
Create a function, with the help of a blob trigger template, which is triggered when files are uploaded to or updated in Azure Blob storage.
You use a consumption plan, which is a hosting plan that defines how resources are allocated to your function app. In the default Consumption Plan, resources are added dynamically as required by your functions. In this serverless hosting, you only pay for the time your functions run. When you run in an App Service plan, you must manage the scaling of your function app.
Reference:
https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-storage-blob-triggered-function

by sdas1 at March 13, 2021, 5:56 p.m.

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sdas1

Highly Voted 4 years, 3 months ago

The solution is B - Deploy the Azure Function in a Consumption plan and use an Event Grid trigger. 1M blobs will cripple the ability of blob trigger to provide the events. The EventGrid trigger is instantaneous, so it depends on your needs.

upvoted 39 times

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Wendy_DK

Highly Voted 4 years, 1 month ago

It repeated question

upvoted 8 times

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dakku987

Most Recent 1 year, 6 months ago

Selected Answer: B

B. Deploy the Azure Function in a Consumption plan and use an Event Grid trigger. Consumption Plan: Azure Functions in a Consumption Plan automatically scales based on the number of incoming events. It is a serverless option where you only pay for the actual execution of functions. Event Grid Trigger: Using an Event Grid trigger allows you to respond to events in Azure Blob Storage, such as new blobs being created. This is a more event-driven and scalable approach compared to polling for changes. chat gpt

upvoted 1 times

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satyamkishoresingh

3 years, 8 months ago

repeated . Answer B

upvoted 2 times

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davita8

4 years, 2 months ago

C. Deploy the Azure Function in a Consumption plan and use a Blob trigger.

upvoted 4 times

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davita8

4 years, 2 months ago

B. Deploy the Azure Function in a Consumption plan and use an Event Grid trigger.

upvoted 2 times

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karma_wins

4 years, 2 months ago

"B" is correct because https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-storage-blob-trigger?tabs=csharp#event-grid-trigger

upvoted 4 times

cadio30

4 years, 1 month ago

Agree with the propose solution as the url states the scenario to utilize event trigger

upvoted 1 times

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v_gul

4 years, 2 months ago

The solution is D - Deploy the Azure Function in an App Service plan and use an Event Grid trigger. App Service plan - ... If you need low latency in your blob triggered functions, consider running your function app in an App Service plan. SOURCE -> https://docs.microsoft.com/en-us/azure/azure-functions/functions-create-storage-blob-triggered-function Event Grid trigger - ... The Event Grid trigger also has built-in support for blob events. Use Event Grid instead of the Blob storage trigger for the following scenarios: ... High-scale: High scale can be loosely defined as containers that have more than 100,000 blobs in them or storage accounts that have more than 100 blob updates per second. SOURCE - > https://docs.microsoft.com/en-gb/azure/azure-functions/functions-bindings-storage-blob-trigger?tabs=csharp

upvoted 2 times

Apox

4 years, 2 months ago

Since minimizing costs is a requirement, and low latency is not, the correct answer should be a "consumption plan". Otherwise I agree with Event Grid Trigger, as this should be used if there are more than 100 000 blobs.

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H_S

4 years, 3 months ago

When your function app runs in the default Consumption plan, there may be a delay of up to several minutes between the blob being added or updated and the function being triggered. If you need low latency in your blob triggered functions, consider running your function app in an App Service plan.

upvoted 2 times

szpinat

4 years, 3 months ago

"You can also use an Event Grid trigger with your Blob storage account." https://docs.microsoft.com/en-gb/azure/azure-functions/functions-bindings-storage-blob-trigger?tabs=csharp

upvoted 1 times

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