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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
2 months 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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Adrianna
13 days ago
Yeah, I've used $slice before to limit the number of items in an array. It's definitely a useful operator.
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Glynda
15 days ago
I think B) $slice is the correct answer here. It allows you to control the number of items returned from an array.
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Breana
16 days ago
I agree, D) seems like a trick answer. MongoDB is usually so flexible.
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Cordell
18 days ago
C) $
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Zachary
1 months ago
B) $slice
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Toi
2 months ago
A) $elemMatch
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Yoko
2 months 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
2 months 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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Talia
21 days ago
D) MongoDB does not support partial retrieval of items from an array
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Timmy
1 months ago
C) $
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Timothy
1 months ago
B) $slice
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Ronnie
1 months ago
A) $elemMatch
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Robt
3 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
2 months ago
I believe it's A) $elemMatch
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Dana
2 months ago
I think it's B) $slice
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Lilli
3 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
3 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
3 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
3 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
2 months ago
I'm pretty sure it's D) MongoDB does not support partial retrieval of items from an array.
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Cordelia
2 months ago
No, it's C) $.
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Ronnie
2 months ago
I think it's A) $elemMatch actually.
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Catalina
2 months ago
I agree, B) $slice is the correct answer.
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