MongoDB Associate Developer

Here you have the best MongoDB C100DEV practice exam questions

  • You have 71 total questions across 15 pages (5 per page)
  • These questions were last updated on March 27, 2026
  • This site is not affiliated with or endorsed by MongoDB.
Question 1 of 71
In an employee collection, each document represents an employee of the company.
What data model is the most effective for tracking the relationship between an employee and their manager?
Answer

Suggested Answer

The suggested answer is D.

Question 2 of 71
Which two are valid MongoDB BSON types? (Choose two.)
Answer

Suggested Answer

The suggested answer is A, D.

Question 3 of 71
Given the following documents in the employees collection:
{ _id: 0, name: “Y.B.”, department: “Sales” },
{ _id: 1, name: “E.H.”, department: “Engineering” },
{ _id: 2, name: “C.Y.”, department: “Support” },
What mongosh command will find a document with name “E.H.”?
Answer

Suggested Answer

The suggested answer is D.

Question 4 of 71
There is a collection of patients for a medical practice.
Which two attributes associated with the patient should be embedded into the patient document rather than stored in its own collection and referenced? (Choose two.)
Answer

Suggested Answer

The suggested answer is B, C.

Question 5 of 71
Given the following explain plan:
Exam c100dev: Image 1
What statement is true for this explain plan?
Answer

Suggested Answer

The suggested answer is C.

About the MongoDB C100DEV Certification Exam

About the Exam

The MongoDB C100DEV (MongoDB Associate Developer) validates your knowledge and skills. Passing demonstrates proficiency and can boost your career prospects in the field.

How to Prepare

Work through all 71 practice questions across 15 pages. Focus on understanding the reasoning behind each answer rather than memorizing responses to be ready for any variation on the real exam.

Why Practice Exams?

Practice exams help you familiarize yourself with the question format, manage your time, and reduce anxiety on the test day. Our C100DEV questions are regularly updated to reflect the latest exam objectives.