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Microsoft DP-420 Exam - Topic 15 Question 54 Discussion

Actual exam question for Microsoft's DP-420 exam
Question #: 54
Topic #: 15
[All DP-420 Questions]

You have an Azure Cosmos DB for NoSQL account.

The change feed is enabled on a container named invoice.

You create an Azure function that has a trigger on the change feed.

What is received by the Azure function?

Show Suggested Answer Hide Answer
Suggested Answer: D

According to the Azure Cosmos DB documentation12, the change feed is a persistent record of changes to a container in the order they occur. The change feed outputs the sorted list of documents that were changed in the order in which they were modified.

The Azure function that has a trigger on the change feed receivesall the properties of the updated items2. The change feed does not include the original items or only the changed properties.The change feed also includes some system-defined properties such as _ts (the last modified timestamp) and _lsn (the logical sequence number)3.

Therefore, the correct answer is:


by Sarah at Nov 17, 2024, 04:22 PM

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Leonida
3 months ago
I thought it was D at first, but B makes more sense.
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Minna
3 months ago
Definitely not C, that's too much info for the change feed.
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Ira
3 months ago
Wait, I thought we got all properties? This is confusing.
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Kristeen
4 months ago
Totally agree, B is the right answer!
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Emilio
4 months ago
It's B, you only get the partition key and changed properties.
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Maynard
4 months ago
I thought it was all properties of both the original and updated items, but now I'm second-guessing myself. Maybe I need to review that section again.
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Shannon
4 months ago
I have a feeling it might only include the partition key and changed properties. That sounds familiar from my notes.
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Erasmo
4 months ago
I practiced a similar question, and I think the function receives all properties of the updated items. That seems like the most comprehensive option.
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Miesha
5 months ago
I remember studying the change feed, but I'm not entirely sure what it returns. I think it might be just the changed properties?
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Samuel
5 months ago
I'm a little confused by this question. Does the change feed send the original and updated items, or just the changes? I'll have to think this through carefully before selecting an answer.
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Ronnie
5 months ago
Okay, I've got a good feeling about this. The change feed is designed to only send the changes, not the full documents, so I'm pretty sure the answer is option B.
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Laurene
5 months ago
Hmm, I'm a bit unsure about this one. The question mentions that the change feed is enabled, but it doesn't explicitly say what the function will receive. I might need to review the change feed documentation to be more confident in my answer.
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Taryn
5 months ago
I think the key here is understanding what the change feed in Cosmos DB does. It should only send the changes, not the full documents, so I'm going to go with option B.
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Alexis
1 year ago
I'm just going to go with D and hope the exam doesn't change the feed on me.
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Lacresha
1 year ago
User1: Fingers crossed that the exam doesn't throw us off.
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Lashaunda
1 year ago
User3: I agree, let's go with D.
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Pilar
1 year ago
User2: Yeah, D seems like the best choice.
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Jutta
1 year ago
User1: I think D is the correct answer.
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Lavonda
1 year ago
Wait, does the change feed come with a free bowl of soup? I'm asking for a friend.
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Mitsue
1 year ago
B) only the partition key and the changed properties of the updated items
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Geoffrey
1 year ago
A) all the properties of the updated items
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Erasmo
1 year ago
D is the correct answer. The change feed only sends the changed properties and system-defined properties, not the entire document.
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Rolande
1 year ago
C seems like the right answer to me. The function should receive both the original and updated items.
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Hildegarde
1 year ago
Definitely, C seems like the most comprehensive choice for what the Azure function should receive.
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Oren
1 year ago
I agree, having access to all properties of both the original and updated items would be useful for the function.
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Stefany
1 year ago
Yeah, C sounds like the most logical option. It would be helpful to have access to both sets of properties.
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Sommer
1 year ago
I think C is the correct answer too. It makes sense to receive both original and updated items.
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Shaunna
1 year ago
I think the answer is B. The change feed only sends the partition key and the changed properties, not the entire document.
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Ming
1 year ago
Exactly, it's a more efficient way to handle the updates.
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Arlette
1 year ago
That makes sense, it helps optimize the performance of the function.
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Mari
1 year ago
So, the Azure function will receive only the necessary information.
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Tammy
1 year ago
I agree, the change feed only sends the partition key and the changed properties.
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Ma
1 year ago
I agree with Curtis, it makes sense for the Azure function to only receive the necessary information.
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Curtis
1 year ago
I believe it's only the partition key and the changed properties of the updated items.
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Ma
1 year ago
I think the Azure function receives all the properties of the updated items.
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