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Free MongoDB C100DEV Exam Questions

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  • MongoDB C100DEV Exam Questions
  • Provided By: MongoDB
  • Exam: MongoDB Certified Developer Associate
  • Certification: MongoDB Certified Developer Associate
  • Total Questions: 411
  • Updated On: Apr 04, 2025
  • Rated: 4.9 |
  • Online Users: 822
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  • Question 1
    • How can you insert a new document into a MongoDB collection named customers?

      Answer: D
  • Question 2
    • When sharding a MongoDB collection, what is the main factor that determines the distribution of data across shards?

      Answer: D
  • Question 3
    • In which of the following CRUD operations can you specify a write concern? Select all that apply.


      Answer: A,B,D
  • 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 }
      }
      We need to use Aggregation Framework to fetch all movies from this collection where 'Drama' is not in genres list and the minimum 'imdb.votes' is at least 100. Additionally, in the projection stage, we want to leave only the following fields:
      -> title
      -> genres
      -> imdb.votes
      We also want to sort the result set by decreasing imdb votes and limit the number of documents retuned to 5.
      Example output:
      [
          {
              imdb: { votes: 1294646 },
              genres: [ 'Action', 'Mystery', 'Sci-Fi' ],
              title: 'Inception'
          },
          {
              imdb: { votes: 1109724 },
              genres: [ 'Adventure', 'Fantasy' ],
              title: 'The Lord of the Rings: The Fellowship of the Ring'
          },
          {
              imdb: { votes: 1081144 },
              genres: [ 'Adventure', 'Fantasy' ],
              title: 'The Lord of the Rings: The Return of the King'
          },
          {
              imdb: { votes: 1080566 },
              genres: [ 'Action', 'Sci-Fi' ],
              title: 'The Matrix'
          },
          {
              imdb: { votes: 1004805 },
              genres: [ 'Action', 'Thriller' ],
              title: 'The Dark Knight Rises'
          }
      ]
      Which pipeline should you use?

      Answer: B
  • Question 5
    • What is the best practice in using the $match operator?

      Answer: D
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