Free MongoDB C100DEV Exam Questions

Become MongoDB Certified with updated C100DEV exam questions and correct answers

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Total 411 Questions | Updated On: Nov 24, 2025
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Question 1

You are developing a MongoDB application where write performance is a critical requirement. Given a scenario where your application primarily performs insert operations and rarely performs updates or deletes, which of the following MongoDB features would best optimize this heavy-write workload?


Answer: D
Question 2

What is the difference between a sparse index and a non-sparse index in MongoDB?


Answer: A
Question 3

In MongoDB, which statement accurately describes a typical task for a MongoDB developer related to schema validation?


Answer: C
Question 4

Which of the following stages do you need to use to randomly select 10 documents from a specific collection?


Answer: D
Question 5

In MongoDB, the $out operator is commonly used within an aggregation pipeline. Which of the following statements accurately describes the functionality and usage of the $out operator?


Answer: A
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Total 411 Questions | Updated On: Nov 24, 2025
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