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Which of the following operator can be used to control the number of items of an array that a query returns?
Suggested Answer: A
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40 comments · newest first
DE
Delisa
10 months ago
I disagree, $elemMatch is more about matching conditions, not limiting.
SA
Sabra
11 months ago
Wait, MongoDB can’t do partial retrieval? Really?
WY
Wynell
11 months ago
$slice is the correct choice, no doubt!
RO
Rolland
11 months ago
I thought $elemMatch was the one for this?
ME
Melissa
11 months ago
Definitely $slice for limiting array items!
MI
Mica
12 months ago
I thought MongoDB didn't allow partial retrieval of arrays, but now I'm confused about $slice. Can someone clarify?
DE
Deandrea
12 months ago
I practiced a similar question, and I believe $slice was the correct choice for limiting array items.
YE
Yen
12 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.
RO
Ronnie
1 year ago
I think I remember that $slice is used to limit the number of items returned from an array in a query.
ER
Ernie
1 year 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.
ST
Stanford
1 year 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.
KA
Katlyn
1 year 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.
BR
Brandon
1 year 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.
ST
Stephanie
1 year 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.
KA
Kallie
1 year 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.
FR
France
1 year 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.
MA
Malcolm
1 year 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.
AD
Adrianna
1 year ago
Yeah, I've used $slice before to limit the number of items in an array. It's definitely a useful operator.
GL
Glynda
1 year ago
I think B) $slice is the correct answer here. It allows you to control the number of items returned from an array.
BR
Breana
1 year ago
I agree, D) seems like a trick answer. MongoDB is usually so flexible.
CO
Cordell
1 year ago
C) $
ZA
Zachary
1 year ago
B) $slice
TO
Toi
1 year ago
A) $elemMatch
YO
Yoko
1 year 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.
DE
Desire
1 year 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.
TA
Talia
1 year ago
D) MongoDB does not support partial retrieval of items from an array
TI
Timmy
1 year ago
C) $
TI
Timothy
1 year ago
B) $slice
RO
Ronnie
1 year ago
A) $elemMatch
RO
Robt
1 year 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.
RO
Romana
1 year ago
I believe it's A) $elemMatch
DA
Dana
1 year ago
I think it's B) $slice
LI
Lilli
1 year 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).
VI
Vincent
1 year ago
I agree with Abraham, $slice is the correct operator for controlling the number of items returned from an array.
AB
Abraham
2 years ago
I think the answer is B) $slice because it allows you to control the number of items returned from an array.
JO
Jospeh
2 years ago
I think B) $slice is the correct answer. It allows you to control the number of items returned from an array.
FR
Freida
1 year ago
I'm pretty sure it's D) MongoDB does not support partial retrieval of items from an array.
CO
Cordelia
1 year ago
No, it's C) $.
RO
Ronnie
1 year ago
I think it's A) $elemMatch actually.
CA
Catalina
1 year ago
I agree, B) $slice is the correct answer.