Free MongoDB C100DEV Exam Questions

Become MongoDB Certified with updated C100DEV exam questions and correct answers

Page:    1 / 83      
Total 411 Questions | Updated On: Dec 18, 2025
Add To Cart
Question 1

You are developing a blogging platform using MongoDB as the database. Each blog post document has a tags array field that holds a list of strings. You are tasked to implement a search functionality that allows users to find blog posts based on the tags. Which of the following MongoDB features would you utilize to implement this functionality efficiently?


Answer: C
Question 2

How does MongoDB handle sorting on fields that contain missing values (i.e., values that are not present in all documents in the collection)?


Answer: C
Question 3

We have a movies collection with the following document structure:
{
  _id: ObjectId("573a1390f29313caabcd6223"),
  genres: [ 'Comedy', 'Drama', 'Family' ],
  title: 'The Poor Little Rich Girl',
  released: ISODate("1917-03-05T00:00:00.000Z"),
  year: 1917,
  imdb: { rating: 6.9, votes: 884, id: 8443 }
},
{
  _id: ObjectId("573a13e3f29313caabdc08a4"),
  genres: [ 'Horror', 'Thriller' ],
  title: 'Mary Loss of Soul',
  year: 2014,
  imdb: { rating: '', votes: '', id: 2904798 }
}
We need to use Aggregation Framework to calculate the following aggregates:
average imdb rating
minimum imdb rating
maximum imdb rating
Expected output:
[
    {
        _id: null,
        avg_rating: 6.6934040649367255,
        min_rating: 1.6,
        max_rating: 9.6
    }
]
Please note that some documents have "" (empty string) for the field "imdb.rating". Exclude these documents before aggregation.
Which pipeline should you use?


Answer: C
Question 4

Which of the following statements are true regarding the MongoDB Aggregation Framework and pipelines? (Select two)


Answer: A,E
Question 5

What is the correct syntax to insert multiple documents into a MongoDB collection named orders and return the _id values for all inserted documents?


Answer: B
Page:    1 / 83      
Total 411 Questions | Updated On: Dec 18, 2025
Add To Cart

© Copyrights DumpsCertify 2025. All Rights Reserved

We use cookies to ensure your best experience. So we hope you are happy to receive all cookies on the DumpsCertify.