MongoDB C100DBA Exam - Topic 6 Question 126 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 126
Topic #: 6

[All C100DBA Questions]

In mongodb how do you update a document partially?

A$project

B$update

C$modify

D$set

Show Suggested Answer

Suggested Answer: D

by Francine at Apr 06, 2026, 10:43 AM

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Anabel

2 hours ago

I think it's D) $set.

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Barbra

5 days ago

I’m surprised $project is even an option here!

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Carole

10 days ago

100% agree, $set is the way to go!

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Melvin

16 days ago

Wait, is $modify even a thing?

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Rozella

2 months ago

I thought it was $update?

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Virgina

2 months ago

It's definitely $set for partial updates!

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Rory

3 months ago

I thought $project was related to querying rather than updating, so I’m leaning towards $set too.

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Lucy

3 months ago

I’m pretty certain that $set is the correct answer, but I wish I could recall the exact syntax we practiced.

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Serina

3 months ago

I remember something about $update, but it feels like that might not be the right choice for partial updates.

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Freeman

3 months ago

I think we used the $set operator in our practice questions for partial updates, but I'm not completely sure.

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