LATEST C100DEV VERSION - C100DEV TORRENT

Latest C100DEV Version - C100DEV Torrent

Latest C100DEV Version - C100DEV Torrent

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MongoDB Certified Developer Associate Exam Sample Questions (Q102-Q107):

NEW QUESTION # 102
In your database there is a movies collection with the following document structure: { _id: ObjectId("573a1390f29313caabcd42e8"), genres: [ 'Short', 'Western' ], title: 'The Great Train Robbery', rated: 'TV-G', year: 1903, imdb: { rating: 7.4, votes: 9847, id: 439 }, countries: [ 'USA' ] }, { _id: ObjectId("573a1390f29313caabcd4323"), genres: [ 'Short', 'Drama', 'Fantasy' ], rated: 'UNRATED', title: 'The Land Beyond the Sunset', year: 1912, imdb: { rating: 7.1, votes: 448, id: 488 }, countries: [ 'USA' ] } In some documents, where there is no rating information for movie, the value is set to '' (empty string). With that in mind, which of the following queries will return the title and rating (see below) of top 3 rated movies in this collection?

  • A. db.movies.find( {}, { _id: 0, title: 1, 'imdb.rating': 1 } ).sort( { 'imdb.rating': 1 } ).limit(3)
  • B. db.movies.find( { 'imdb.rating': { $eq: '' } }, { _id: 0, title: 1, 'imdb.rating': 1 } ).sort( { 'imdb.rating': -1 } ).limit(3)
  • C. db.movies.find( { 'imdb.rating': { $ne: '' } }, { _id: 0, title: 1, 'imdb.rating': 1 } ).sort( { 'imdb.rating': 1 } ).limit(3)
  • D. db.movies.find( { 'imdb.rating': { $ne: '' } }, { _id: 0, title: 1, 'imdb.rating': 1 } ).sort( { 'imdb.rating': -1 } ).limit(3)

Answer: D

Explanation:
https://docs.mongodb.com/manual/reference/method/cursor.sort/


NEW QUESTION # 103
Select the method that forces MongoDB to use a specific index.

  • A. index()
  • B. hint()
  • C. explain()
  • D. force()

Answer: B

Explanation:
https://docs.mongodb.com/manual/reference/method/cursor.hint/


NEW QUESTION # 104
Given the following MongoDB URI: mongodb+srv://datascientist34:[email protected]/admin Which of the following statements are true? (select 2)

  • A. There are 178 nodes in the xtr replica set.
  • B. The password used for authentication is xtr-178
  • C. The password used for authentication is ta33w9rd
  • D. The user datascientist34 is trying to authenticate on database admin.

Answer: C,D

Explanation:
Explanation: https://docs.mongodb.com/manual/reference/connection-string/


NEW QUESTION # 105
Which of the following commands will add a collection that is stored in JSON file to a MongoDB cluster?

  • A. mongodump
  • B. mongostore
  • C. mongoexport
  • D. mongoimport

Answer: D

Explanation:
https://docs.mongodb.com/database-tools/mongoimport/


NEW QUESTION # 106
We have the following indexes in a movies collection: { _id: 1 } { title: 1, year: 1 } Which of the following queries can be covered by one of the given indexes?

  • A. db.movies.find( { genres: "Crime" }, { _id: 0, title: 1, year: 1, genres: 1 } )
  • B. db.movies.find( { title: { $in: [ "Death Note", "The Immigrant" ] } }, { _id: 0, title: 1, year: 1 } )
  • C. db.movies.find( { title: { $in: [ "Death Note", "The Immigrant" ] } }, { _id: 0, title: 1, year: 1, genres: 1 } )

Answer: B

Explanation:
No, this query would use the { title: 1, year: 1 } index, but it is projecting the genres field. https://docs.mongodb.com/manual/core/query-optimization/#covered-query


NEW QUESTION # 107
......

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