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MongoDB C100DBA Exam - Topic 1 Question 42 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 42
Topic #: 1
[All C100DBA Questions]

Which of the following operator can be used to limit the number of documents in an array field of a document after an update is performed?

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Suggested Answer: B

by Cherry at May 07, 2022, 10:09 PM

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Fletcher
4 months ago
I disagree, I think D could be a valid answer too.
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Lino
5 months ago
Surprised that none of these options mention $slice directly!
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Ozell
5 months ago
C is not a thing, right? Just checking!
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Alfreda
5 months ago
I thought it was A at first, but B makes more sense.
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Junita
5 months ago
Definitely B, that's the right combo for limiting arrays!
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Arlene
5 months ago
I'm leaning towards "None of the above," but I really need to double-check what $removeFromSet does.
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Ruby
5 months ago
I practiced a similar question where we had to manage array fields, and I think $push with $slice was the right answer there too.
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Domitila
5 months ago
I feel like $arrayLimit sounds familiar, but I can't recall if it's actually a valid operator in MongoDB.
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Tresa
5 months ago
I think I remember something about using $push with $each and $slice to limit array size, but I'm not entirely sure.
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Yolando
5 months ago
Ah, I remember learning about this command in class. I'm pretty confident the correct answer is option C - the startup-config is erased but the management interface settings are preserved.
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Brittani
6 months ago
This is a good opportunity to demonstrate my knowledge of change set deployment. I'll make sure to carefully review the options and select the two correct configurations needed to successfully move the changes to production.
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Mona
6 months ago
I practiced a similar question about inflation affecting measurements. Non-financial ones shouldn't be distorted by it, which makes me lean towards option D.
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