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?

A$ elemMatch

B$slice

DMongoDB does not support partial retrieval of items from an array

Show Suggested Answer

Suggested Answer: A

by Marta at Jul 03, 2024, 06:24 PM

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Stephanie

4 days 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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France

11 days 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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Kallie

16 days 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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Malcolm

4 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

3 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

3 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

3 months ago

I agree, D) seems like a trick answer. MongoDB is usually so flexible.

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Cordell

3 months ago

C) $

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Zachary

4 months ago

B) $slice

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Toi

4 months ago

A) $elemMatch

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Yoko

5 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

5 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

3 months ago

D) MongoDB does not support partial retrieval of items from an array

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Timmy

4 months ago

C) $

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Timothy

4 months ago

B) $slice

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Ronnie

4 months ago

A) $elemMatch

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Robt

6 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

5 months ago

I believe it's A) $elemMatch

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Dana

5 months ago

I think it's B) $slice

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Lilli

6 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

6 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

6 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

6 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

4 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

4 months ago

No, it's C) $.

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Ronnie

4 months ago

I think it's A) $elemMatch actually.

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Catalina

5 months ago

I agree, B) $slice is the correct answer.

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