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MongoDB Exam C100DBA Topic 1 Question 109 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 109
Topic #: 1
[All C100DBA Questions]

Consider that our posts collection contains an array field called tags that contains tags that the user enters. {

Which of the following commands will find all the posts that have been tagged as tutorial.

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Suggested Answer: C

by Joaquin at Mar 22, 2025, 05:15 AM

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Glendora
2 months ago
Wait, 'tutorial' is a tag, not a tutorial. This test is testing my sanity, not my MongoDB skills.
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Merissa
1 months ago
Wait, 'tutorial' is a tag, not a tutorial. This test is testing my sanity, not my MongoDB skills.
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Cyndy
2 months ago
A) db.posts.find( { tags : [\'tutorial\'] } );
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Gerald
2 months ago
B) db.posts.find( { $array : {tags: tutorial}) > is just plain weird. What is this, JavaScript land? I'll stick with good old C).
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Gilma
2 months ago
I think D is definitely wrong, it doesn't look like a valid command.
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Stefanie
2 months ago
I'm not sure, but C could also be a possibility.
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Lorita
2 months ago
D) db.posts.findInArray( { tags : tutorial > ); sounds like it should work, but I've never heard of that command. Is that some secret MongoDB technique?
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Luis
2 months ago
A) db.posts.find( { tags : [tutorial] } ); is the way to go. Gotta love that array matching!
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Jonell
25 days ago
User2: Thanks for the clarification, I'll keep that in mind for future queries.
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Nana
27 days ago
User3: User1 is right, A) is the correct command for finding posts with the 'tutorial' tag.
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Tyisha
1 months ago
User2: C) db.posts.find( { tags : 'tutorial' } ); is also a valid option.
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Fletcher
1 months ago
User1: A) db.posts.find( { tags : [tutorial] } ); is the way to go. Gotta love that array matching!
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Lashon
1 months ago
User2: Thanks for the clarification, I'll keep that in mind for future queries.
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Jennie
2 months ago
User3: User1 is right, A) is the correct command for finding posts with the 'tutorial' tag.
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Talia
2 months ago
User2: C) db.posts.find( { tags : 'tutorial' } ); is also a valid option.
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Timothy
2 months ago
User1: A) db.posts.find( { tags : [tutorial] } ); is the way to go. Gotta love that array matching!
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Corrie
3 months ago
I agree with Thea, A seems correct.
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Mindy
3 months ago
C) db.posts.find( { tags : tutorial } ); is the correct answer. It's a simple and straightforward way to query for posts with the 'tutorial' tag.
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Kassandra
2 months ago
Great, thanks for clarifying!
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Veronika
2 months ago
C) db.posts.find( { tags : \'tutorial\' } ); is the correct answer.
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Stephane
2 months ago
A) db.posts.find( { tags : [\'tutorial\'] } );
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Thea
3 months ago
I think the answer is A.
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