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MongoDB C100DBA Exam - 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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Delisa
3 months ago
I disagree, $elemMatch is more about matching conditions, not limiting.
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Sabra
3 months ago
Wait, MongoDB can’t do partial retrieval? Really?
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Wynell
3 months ago
$slice is the correct choice, no doubt!
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Rolland
4 months ago
I thought $elemMatch was the one for this?
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Melissa
4 months ago
Definitely $slice for limiting array items!
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Mica
4 months ago
I thought MongoDB didn't allow partial retrieval of arrays, but now I'm confused about $slice. Can someone clarify?
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Deandrea
4 months ago
I practiced a similar question, and I believe $slice was the correct choice for limiting array items.
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Yen
4 months ago
I'm not entirely sure, but I feel like $elemMatch is more about matching specific elements rather than controlling the number of items.
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Ronnie
5 months ago
I think I remember that $slice is used to limit the number of items returned from an array in a query.
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Ernie
5 months ago
I've got this one! The $slice operator is the correct answer. It allows you to specify the number of items to return from the beginning or end of an array. I'm confident that's the right choice here.
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Stanford
5 months ago
I'm a bit confused by this question. I know there are different ways to work with arrays in MongoDB, but I'm not entirely sure which operator is specifically used to control the number of items returned. I'll have to think this through carefully.
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Katlyn
5 months ago
I'm pretty sure the $slice operator is used to limit the number of items returned from an array, but I'll double-check the options to make sure.
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Brandon
5 months ago
Hmm, this looks like a tricky one. I'll need to think carefully about the different MongoDB operators and which one might be used to control the number of items returned from an array.
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Stephanie
5 months ago
Okay, let me walk through this step-by-step. The question is asking about an operator that can control the number of items returned from an array. I think the $slice operator is the best fit, but I'll review the other options just to be sure.
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Kallie
5 months ago
I'm pretty confident this is asking about the types of Configuration Items (CIs) that Service Mapping can discover. I think the best answer is D - Cloud Services, Applications, and CI Relationships.
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France
5 months ago
This looks like a pretty straightforward question about the Server Services lab within the BPServer exe. I'm pretty confident I can figure this out.
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Malcolm
9 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
8 months 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
8 months 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
8 months ago
I agree, D) seems like a trick answer. MongoDB is usually so flexible.
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Cordell
8 months ago
C) $
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Zachary
9 months ago
B) $slice
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Toi
9 months ago
A) $elemMatch
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Yoko
9 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
9 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
8 months ago
D) MongoDB does not support partial retrieval of items from an array
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Timmy
8 months ago
C) $
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Timothy
8 months ago
B) $slice
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Ronnie
9 months ago
A) $elemMatch
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Robt
10 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
10 months ago
I believe it's A) $elemMatch
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Dana
10 months ago
I think it's B) $slice
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Lilli
10 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
10 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
11 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
11 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
9 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
9 months ago
No, it's C) $.
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Ronnie
9 months ago
I think it's A) $elemMatch actually.
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Catalina
9 months ago
I agree, B) $slice is the correct answer.
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