Microsoft AZ-204 Exam - Topic 5 Question 120 Discussion

Actual exam question for Microsoft's AZ-204 exam

Question #: 120
Topic #: 5

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.

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You develop a software as a service (SaaS) offering to manage photographs. Users upload photos to a web service which then stores the photos in Azure Storage Blob storage. The storage account type is General-purpose V2.

When photos are uploaded, they must be processed to produce and save a mobile-friendly version of the image. The process to produce a mobile-friendly version of the image must start in less than one minute.

You need to design the process that starts the photo processing.

Solution: Use the Azure Blob Storage change feed to trigger photo processing.

Does the solution meet the goal?

AYes

BNo

Show Suggested Answer

Suggested Answer: B

The change feed is a log of changes that are organized into hourly segments but appended to and updated every few minutes. These segments are created only when there are blob change events that occur in that hour.

Instead catch the triggered event, so move the photo processing to an Azure Function triggered from the blob upload.

https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-change-feed

https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-event-overview

by Ranee at Jul 13, 2025, 10:44 PM

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Reena

2 months ago

Change feed is perfect for triggering events like this!

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Beula

3 months ago

I think it might be too slow for some use cases.

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Rory

3 months ago

Wait, can it really process that fast?

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Thea

3 months ago

Definitely agree, the change feed is super useful.

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Candida

3 months ago

That sounds like a solid approach!

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Luann

3 months ago

I practiced a scenario where we used Azure Functions for processing images. Maybe that would be a better fit than relying solely on the change feed?

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Lashawn

4 months ago

I feel like the change feed is a good idea, but I can't recall if it guarantees processing within that time frame.

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Rana

4 months ago

I remember a practice question where we discussed event-driven architectures. This seems similar, but I wonder if there are better options for immediate processing.

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Susy

4 months ago

I think using the Azure Blob Storage change feed could work, but I'm not entirely sure if it triggers fast enough for the one-minute requirement.

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Malcolm

4 months ago

I'm a bit confused on this one. The question says there might be multiple correct solutions, so I'm not sure if the change feed is the only way to approach this. I'll need to consider other options like Azure Functions or Logic Apps to see if there are any other viable solutions.

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Brendan

4 months ago

Okay, let's think this through step-by-step. The user uploads a photo to Blob storage, and we need to start processing that photo in under a minute. Using the change feed to trigger the processing seems like a good approach, as it will react to the new blob being added. I'll need to double-check the change feed latency, but I think this could work.

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Clement

5 months ago

Hmm, I'm a bit unsure about this. The requirement says the photo processing must start in less than a minute, and I'm not sure if the change feed is fast enough to meet that. I'll need to research the change feed latency to be sure.

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Ronald

5 months ago

This looks like a straightforward question about using Azure Blob Storage change feed to trigger photo processing. I think I can handle this one.

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Stanford

7 months ago

But the solution states that the process must start in less than one minute, so I think it's a good option.

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Isreal

7 months ago

I'm not so sure, maybe there could be a faster way to start the photo processing.

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Chau

7 months ago

I agree with Stanford, using Azure Blob Storage change feed sounds like a good way to trigger the photo processing.

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Lashonda

7 months ago

Hmm, I'm not sure. Isn't there an easier way to do this, like maybe a simple Azure Function that gets triggered on new uploads? This change feed thing sounds a bit complicated.

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Vi

5 months ago

User2: B) No

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Roosevelt

7 months ago

User1: A) Yes

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Stanford

7 months ago

I think the solution meets the goal.

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Jettie

7 months ago

Yep, this solution checks all the boxes. Blob Storage change feed is the way to go for this scenario. Now, can we get back to discussing the lunch menu?

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Keshia

7 months ago

I agree, using the change feed is a smart approach. It'll automatically detect new uploads and kick off the processing without any delay.

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Lilli

8 months ago

The Azure Blob Storage change feed seems like a good solution to trigger the photo processing. It should be able to start the process within the one-minute requirement.

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