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MongoDB Certified Developer Associate Exam Sample Questions (Q193-Q198):

NEW QUESTION # 193
How does the document relate to the collection in MongoDB? Check all that apply.

• A. Collections are tables of documents.
• B. Documents are organized into collections.
• C. Collections consists of one or many documents.
• D. Documents consist of collections.

Answer: B,C Explanation:
Explanation: https://docs.mongodb.com/manual/core/databases-and-collections/
NEW QUESTION # 194
Which collection method do you need to use to drop a specific collection?

• A. db.collection.dropIndex()
• B. db.collection.remove()
• C. db.collection.drop()
• D. db.collection.dropCollection()

Answer: C Explanation:
https://docs.mongodb.com/manual/reference/method/db.collection.drop/
NEW QUESTION # 195
Which of the following scenarios is best suited for applying the Attribute Pattern?

• A. The documents in the collection are quite large.
• B. You need to apply document validation before inserting/modifying.
• C. Some fields share a similar characteristics, and you want to search across those fields.

Answer: C Explanation:
https://www.mongodb.com/blog/post/building-with-patterns-the-attribute-pattern
NEW QUESTION # 196
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 extract all movies from this collection where genres does not include 'Romance'. Which query should we use?

• A. db.movies.find( { genres: { $nin: ['Romance'] } } )
• B. db.movies.find( { genres: { $and: ['Romance'] } } )
• C. db.movies.find( { genres: { $or: ['Romance'] } } )
• D. db.movies.find( { genres: { $in: ['Romance'] } } )

Answer: A Explanation:
https://docs.mongodb.com/manual/reference/operator/query/nin/
NEW QUESTION # 197
Given a movies collection where each document has the following structure: { _id: ObjectId("573a1391f29313caabcd9264"), genres: [ 'Romance', 'Drama' ], title: 'The Divorcee', languages: [ 'English', 'French' ], year: 1930, imdb: { rating: 6.9, votes: 1740, id: 20827 }, countries: [ 'USA' ] } Which of the following queries will find all movies that have exactly 5 languages?

• A. db.movies.find( { languages: { $size: 5 } } )
• B. db.movies.find( { languages: { $eq: 5 } } )
• C. db.movies.find( { languages: { $gt: 5 } } )
• D. db.movies.find( { languages: 5 } )

Answer: A Explanation:
https://docs.mongodb.com/manual/reference/operator/query/size/
NEW QUESTION # 198
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