Free MongoDB C100DEV Exam Questions

Become MongoDB Certified with updated C100DEV exam questions and correct answers

Page:    1 / 83      
Total 411 Questions | Updated On: Feb 09, 2026
Add To Cart
Question 1

How can we present the basic syntax for aggregation in MongoDB?


Answer: D
Question 2

In your database there is a collection named trips with the following document structure:
{
  '_id': ObjectId("572bb8222b288919b68abf6d"),
  'trip_duration': 858,
  'start_station id': 532,
  'end_station_id': 401,
  'bike_id': 17057,
  'start_station_loc': { type: 'Point', coordinates: [ -73.960876, 40.710451 ] },
  'end_station_loc': { type: 'Point', coordinates: [ -73.98997825, 40.72019576 ] },
  'start_time': ISODate("2016-01-01T00:09:31.000Z"),
  'stop_time': ISODate("2016-01-01T00:23:49.000Z")
}
How can you extract all trips from this collection ended at stations that are to the west of the -73.5 longitude coordinate?


Answer: C
Question 3

In the context of MongoDB development, you are creating a new service that is expected to handle high load. You've decided to leverage the MongoDB drivers' connection pooling capability. What best describes connection pooling and its advantages?


Answer: C
Question 4

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 5

Which of the following constraints might impact your data model for MongoDB? (Select three)


Answer: B,C,E
Page:    1 / 83      
Total 411 Questions | Updated On: Feb 09, 2026
Add To Cart

© Copyrights DumpsCertify 2026. All Rights Reserved

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