MongoDB Exam C100DBA Topic 8 Question 104 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 104
Topic #: 8

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?

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Suggested Answer: B

by Lynelle at Dec 05, 2024, 06:19 AM

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Asha

2 days ago

The answer is clearly C) 4. The unwind operation will split each document into individual elements of the 'traits' array, so the original 2 documents will become 4 documents.

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Paris

7 days ago

I think the answer is C) 4.

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