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MongoDB C100DBA Exam - Topic 1 Question 11 Discussion

Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?
D) db.inventory.find( { ratings: { ratings: { $gt: 5, $lt: 9 } } } )
A) db.inventory.find( { ratings: { $elemMatch: { $gte: 3, $lte: 6 } } } )
B) db.inventory.find( { ratings: { $elemMatch: { $gt: 3, $lt: 6 }
C) db.inventory.find( { ratings: { ratings.$: { $gt: 5, $lt: 9 } } } )

MongoDB C100DBA Exam - Topic 1 Question 11 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 11
Topic #: 1
[All C100DBA Questions]

Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:

Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?

Show Suggested Answer Hide Answer
Suggested Answer: D

by Linn at May 05, 2022, 07:58 PM

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Mauricio
8 months ago
I’m surprised there’s no option for exact matches!
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Kristeen
9 months ago
Wait, are we sure A is the only correct one?
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Elfriede
9 months ago
C and D don’t seem right, they’re missing $elemMatch.
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Paris
9 months ago
I think B is better, it’s more precise with the range.
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Shayne
9 months ago
A looks good, it uses $elemMatch correctly.
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Laurel
9 months ago
I’m confused about options C and D; they seem incorrect since they don’t use $elemMatch properly.
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Latia
9 months ago
I remember we did a similar question where $elemMatch was key to finding specific ratings. That makes me lean towards option A again.
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Lawana
9 months ago
I think option A looks familiar because we practiced using $elemMatch for conditions on arrays.
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Tamar
9 months ago
I'm not entirely sure, but I feel like option B might be too restrictive with the $gt and $lt operators.
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Barrett
9 months ago
I'm leaning towards Job Families as the answer. Since the question mentions "defining 50 different jobs," that suggests there may be some higher-level grouping or categorization needed to link them to the Projects jobs.
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Arlyne
9 months ago
Hmm, I'm not sure about this one. I'm thinking it might be C - Configure restrictions inside the policy section if VMware Cloud Director, but I'm not 100% confident.
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Krissy
9 months ago
I feel pretty confident about this one. The question is clearly testing our knowledge of best practices in corporate governance. I'll methodically evaluate each statement against the principles we've covered in class.
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