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MongoDB Certified Developer Associate Exam Sample Questions (Q32-Q37):

NEW QUESTION # 32
Which cursor method should you use to specify the maximum number of documents returned?

• A. cursor.limit()
• B. cursor.count()
• C. cursor.map()
• D. cursor.hint()
• E. cursor.skip()

Answer: A Explanation:
https://docs.mongodb.com/manual/reference/method/cursor.limit/
NEW QUESTION # 33
Suppose you have a following index for footballpalyers collection: { "lastname": 1, "details.country": 1, "details.club": 1, "age": 1 } Determine which queries are able to successfully use a given index for both filtering and sorting.

• A. db.footballplayers.find( { "lastname": { "$gte": "L" } } ).sort( { "details.club": -1 } )
• B. db.footballplayers.find( { "lastname": "Lewandowski", "details.country": { "$gt": "D" } } ).sort( { "details.country": 1 } )
• C. db.footballplayers.find( { "lastname": "Lewandowski" } ).sort( { "details.country": 1, "details.club": 1 } )

Answer: B,C Explanation:
db.footballplayers.find( { "lastname": "Lewandowski", "details.country": { "$gt": "D" } } ).sort( { "details.country": 1 } ) Yes, because it uses the same field for equality and sorting. db.footballplayers.find( { "lastname": { "$gte": "L" } } ).sort( { "details.club": -1 } ) No, this query doesn't use equality on the index prefix.
NEW QUESTION # 34
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: { $in: ['Romance'] } } )
• B. db.movies.find( { genres: { $nin: ['Romance'] } } )
• C. db.movies.find( { genres: { $and: ['Romance'] } } )
• D. db.movies.find( { genres: { $or: ['Romance'] } } )

Answer: B Explanation:
https://docs.mongodb.com/manual/reference/operator/query/nin/
NEW QUESTION # 35
Assign typical operational tasks to the Database Administrator.

• A. write data
• B. create index, create user
• C. write data, read data
• D. read data

Answer: B
NEW QUESTION # 36
You have the following configuration file: net: bindIp: localhost port: 27000 security: authorization: enabled.
You have to edit this file to use new directory as the dbPath: /var/mongodb/db Select correct Answer .

• A. storage: dbPath: /var/mongodb/db net: bindIp: localhost port: 27000 security: authorization: enabled
• B. dbPath: storage: /var/mongodb/db net: bindIp: localhost port: 27000 security: authorization: enabled
• C. storage: dbPath: /data/db net: bindIp: localhost port: 27000 security: authorization: enabled

Answer: A Explanation:
https://docs.mongodb.com/manual/reference/configuration-options/
NEW QUESTION # 37
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