Free MongoDB C100DEV Exam Questions
Absolute Free C100DEV Exam Practice for Comprehensive Preparation
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MongoDB C100DEV Exam Questions
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Provided By: MongoDB
- Exam: MongoDB Certified Developer Associate
- Certification: MongoDB Certified Developer Associate
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Total Questions: 411
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Updated On: Apr 16, 2026
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Rated: 4.9 |
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Online Users: 822
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Question 1
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In a MongoDB database, you have a collection named orders that contains information about various product orders placed by customers. Each document in the collection has the following structure:{"customerID": "
", "orderID": "", "product": "", "quantity":, "price":, "date": "", "status": "" }You are required to write an aggregation query that retrieves all orders placed by customers where the quantity of ordered items is greater than 100 and the status of the order is "delivered". Which of the following $match stages would you use to achieve this? Select the best option.
Answer: A
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Question 2
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Suppose you insert the following documents into a companies collection:db.companies.insertMany([{"name": "Facebook"},{"name": "X"}])Select all true statements about this command. (Select three)
Answer: C,D,E
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Question 3
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As a MongoDB Developer, you are tasked with the deletion of specific documents in a collection named users. The documents to be deleted are those that meet the following criteria: the age field is less than 18 and the status field is "inactive". After the deletion, you need to know the count of the deleted documents. Which of the following commands would correctly perform this operation?
Answer: A
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As a MongoDB Developer, you are tasked with the deletion of specific documents in a collection named users. The documents to be deleted are those that meet the following criteria: the age field is less than 18 and the status field is "inactive". After the deletion, you need to know the count of the deleted documents. Which of the following commands would correctly perform this operation?
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Question 4
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Suppose you have a reviews collection with the following index:{ stars: 1, votes: 1 }Which of the following queries would be a covered query?
Answer: D
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Question 5
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Suppose you have a products collection with an index:{ product_category: 1 }For which of the following queries can MongoDB look at only a subset of the index entries, rather than all of the index entries?
Answer: D
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