Become MongoDB Certified with updated C100DEV exam questions and correct answers
There is a collection named products in MongoDB database. Your coworker wants to know how many products are in this collection (number of documents in the collection). Which query should you use? (Select two)
How does MongoDB handle sorting on fields that contain missing values (i.e., values that are not present in all documents in the collection)?
You have a MongoDB collection named students, where each document represents a student. The documents include fields like name, age, and courses. The courses field is an array that lists the course codes each student is enrolled in. You want to find all students enrolled in the course with the code "CS101". Which query will correctly retrieve all students enrolled in "CS101"?
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