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MongoDB Exam C100DBA Topic 1 Question 91 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 91
Topic #: 1
[All C100DBA Questions]

Which of the following operator can be used to control the number of items of an array that a query returns?

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Suggested Answer: A

by Marta at Jul 03, 2024, 05:24 PM

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Malcolm
9 days ago
Wait, what? I thought MongoDB could do anything. D) must be a trick question. There's no way they'd take away our ability to fetch parts of an array.
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Toi
21 hours ago
A) $elemMatch
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Yoko
12 days ago
Hmm, I'm leaning towards B) $slice. It sounds like the kind of operator that would let you do partial retrieval from an array.
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Desire
13 days ago
Haha, I bet the correct answer is C) $. It's always the weird one that gets you! Just kidding, I know that's not it.
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Robt
2 months ago
I'm pretty sure it's D) MongoDB does not support partial retrieval of items from an array. I remember reading that in the documentation.
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Romana
21 days ago
I believe it's A) $elemMatch
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Dana
24 days ago
I think it's B) $slice
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Lilli
2 months ago
I'm not sure, but I think MongoDB does not support partial retrieval of items from an array, so maybe the answer is D).
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Vincent
2 months ago
I agree with Abraham, $slice is the correct operator for controlling the number of items returned from an array.
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Abraham
2 months ago
I think the answer is B) $slice because it allows you to control the number of items returned from an array.
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Jospeh
2 months ago
I think B) $slice is the correct answer. It allows you to control the number of items returned from an array.
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Freida
5 days ago
I'm pretty sure it's D) MongoDB does not support partial retrieval of items from an array.
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Cordelia
5 days ago
No, it's C) $.
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Ronnie
8 days ago
I think it's A) $elemMatch actually.
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Catalina
11 days ago
I agree, B) $slice is the correct answer.
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