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: Nov 26, 2025
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Rated: 4.9 |
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Online Users: 822
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Question 1
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Given the following orders collection in MongoDB:[{"_id": 1,"customer": "John","orderDetails": [{ "productId": "P1", "quantity": 2, "unitPrice": 50 },{ "productId": "P2", "quantity": 1, "unitPrice": 30 }]},{"_id": 2,"customer": "Sara","orderDetails": [{ "productId": "P1", "quantity": 3, "unitPrice": 50 },{ "productId": "P3", "quantity": 2, "unitPrice": 20 }]},{"_id": 3,"customer": "Peter","orderDetails": [{ "productId": "P2", "quantity": 2, "unitPrice": 30 },{ "productId": "P4", "quantity": 1, "unitPrice": 100 }]}]Which MongoDB query will find all orders that contain a product with the productId of "P1" and a quantity greater than 1?
Answer: A
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Question 2
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Consider a collection named orders with the following documents:{"_id" : ObjectId("5f0a7e80d8c9c7b5a48c49e1"),"order_number" : 1001,"customer_id" : "CUST-001","order_date" : ISODate("2022-01-01T00:00:00Z"),"total_amount" : 199.99},{"_id" : ObjectId("5f0a7e80d8c9c7b5a48c49e2"),"order_number" : 1002,"customer_id" : "CUST-002","order_date" : ISODate("2022-02-01T00:00:00Z"),"total_amount" : 299.99},{"_id" : ObjectId("5f0a7e80d8c9c7b5a48c49e3"),"order_number" : 1003,"customer_id" : "CUST-003","order_date" : ISODate("2022-03-01T00:00:00Z"),"total_amount" : 399.99}What is the query to create a compound index on the "customer_id" (ascending) and "order_date" (descending) fields in the orders collection?
Answer: C
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Question 3
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In MongoDB, which statement accurately describes a typical task for a MongoDB developer related to schema validation?
Answer: C
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In MongoDB, which statement accurately describes a typical task for a MongoDB developer related to schema validation?
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Question 4
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You are managing a MongoDB collection named orders, where each document represents an order. The documents contain the following fields:order_id (String): The unique identifier for the order.customer_name (String): The name of the customer who placed the order.total_amount (Number): The total amount of the order.status (String): The status of the order, which can be "pending," "shipped," or "delivered."items (Array of Strings): A list of items included in the order.You want to find all orders that meet the following criteria:The order has a total amount greater than $1000.The order status is either "pending" or "shipped."The order contains either "laptop" or "smartphone" in the list of items.Which of the following queries would return the correct documents?
Answer: D
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You are managing a MongoDB collection named orders, where each document represents an order. The documents contain the following fields:order_id (String): The unique identifier for the order.customer_name (String): The name of the customer who placed the order.total_amount (Number): The total amount of the order.status (String): The status of the order, which can be "pending," "shipped," or "delivered."items (Array of Strings): A list of items included in the order.You want to find all orders that meet the following criteria:The order has a total amount greater than $1000.The order status is either "pending" or "shipped."The order contains either "laptop" or "smartphone" in the list of items.Which of the following queries would return the correct documents?
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Question 5
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How can you insert a new document into a MongoDB collection named customers?
Answer: D
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How can you insert a new document into a MongoDB collection named customers?