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MongoDB C100DBA Exam - Topic 1 Question 25 Discussion

Posted by Yoko on May 03, 2022 at 10:36 PM

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.

Suggested Answer: C

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13 comments · newest first
XU
Xuan 11 months ago
I agree, C is the only one that makes sense here!
LO
Lonna 12 months ago
Wait, can you really use $array like that? Seems off.
CH
Christa 12 months ago
No way, D is totally wrong.
HO
Hobert 12 months ago
I think A looks good too, but it’s not quite right.
TR
Tracey 1 year ago
Option C is definitely the right choice!
IV
Ivan 1 year ago
I practiced a similar question where we had to find documents with specific tags, and I think option C looks right.
AR
Arlean 1 year ago
I'm not entirely sure, but I remember something about using `$elemMatch` for arrays. Is that relevant here?
RO
Ronna 1 year ago
I think the correct command should be the one that uses a simple equality check, like `tags: 'tutorial'`.
BL
Blythe 1 year ago
I feel like option A is close, but it seems off because of the array brackets. I might be overthinking it though.
LE
Leonard 1 year ago
Hmm, this one seems tricky. I'll need to carefully review the log entries to see what the "ExecutionLink From:" text refers to.
LE
Lemuel 1 year ago
This question seems to be testing our knowledge of VRF and routing protocols. I'll need to carefully consider the scalability and flexibility of each option.
LA
Laurene 1 year ago
Okay, I think I've got this. The key is that the Internships object is the master, so we need to focus on granting access to the Applications object.
WI
Wilford 1 year ago
I think local law is definitely part of the regulatory framework, but I'm not sure about the other options.
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