BlackFriday 2024! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

MongoDB Exam C100DBA Topic 6 Question 96 Discussion

Actual exam question for MongoDB's C100DBA exam
Question #: 96
Topic #: 6
[All C100DBA Questions]

Suposse tou have the following collection with only 2 documents:

If you run an aggregation query and use { $unwind: "$traits" } as the first stage, how many documents will be passed to the next stage of the aggregation pipeline?

Show Suggested Answer Hide Answer
Suggested Answer: B

by Salena at Sep 11, 2024, 04:49 AM

Limited Time Offer

25%

Off

Get Premium C100DBA Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel
Sylvie
2 months ago
I agree with Mona, I also think the answer is C) 4 because each document will be duplicated for each element in the 'traits' array.
upvoted 0 times
...
Mona
2 months ago
But if there are only 2 documents and we unwind the 'traits' field, wouldn't it create 4 documents?
upvoted 0 times
...
Dominga
2 months ago
Alright, time to put on my thinking cap. I reckon the answer is B) 5. Unwinding that 'traits' array is gonna split each of the 2 documents into 5 separate ones. *winks* Gotta love these aggregation queries, am I right?
upvoted 0 times
...
Isadora
2 months ago
Ha, this is like a trick question! The answer's gotta be E) 1. I mean, come on, if you unwind the 'traits' field, you're basically flattening the whole collection into a single document. Easy money, folks!
upvoted 0 times
Skye
1 months ago
Yeah, I agree. Unwinding the 'traits' field will collapse the documents into one.
upvoted 0 times
...
Karan
2 months ago
I think you're right, E) 1 seems like the correct answer.
upvoted 0 times
...
...
Major
2 months ago
Oof, this one's a real brain-buster. I'm gonna have to go with D) 2 on this one. Unwinding the 'traits' array should keep the original document count, right? *scratches head* Hmm, maybe I should've paid more attention in class...
upvoted 0 times
...
Ming
2 months ago
This one's tricky, but I think the correct answer is C) 4. The question states there are only 2 documents, and when you unwind the 'traits' field, each document will be split into 2 separate documents. Easy peasy!
upvoted 0 times
...
Tish
2 months ago
I disagree, I believe the answer is A) 3.
upvoted 0 times
...
Emilio
2 months ago
Hmm, let's see... Unwinding the 'traits' field should create a new document for each element in the array, so I'd say the answer is B) 5. Boom, nailed it!
upvoted 0 times
Chan
2 months ago
No, I'm pretty sure it's B) 5 because each element in the 'traits' array will create a new document.
upvoted 0 times
...
Ashton
2 months ago
I think it's actually C) 4, because there are 2 documents and each document has 2 elements in the 'traits' array.
upvoted 0 times
...
...
Mona
2 months ago
I think the answer is C) 4.
upvoted 0 times
...

Save Cancel