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Role of MongoDB in a Developer Associate environment

MongoDB is a NoSQL document-oriented database, which is the most popular choice for storing data in a developer environment. MongoDB is an open-source project which means it's freely available for download, use, and modification. It's also being developed by an independent nonprofit organization called MongoDB Inc., which offers support subscriptions for MongoDB Enterprise Server. MongoDB C100DEV Dumps is the best online training platform for learning MongoDB. Schedule times start to get a bit easier when guaranteed busy is turned on. This means that the game will always try to fill up your schedule with matches, even if you are not available to play them. This can help you to avoid losing points because you were not available to play. If you have lost your professional qualification lot easier account and password, you can get a new account set up and password reset.

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MongoDB Certified Developer Associate Exam Sample Questions (Q108-Q113):

NEW QUESTION # 108
Where is collection metadata stored in a sharded cluster?

A. On the configuration servers.
B. In a random shard.
C. In the primary shard.

Answer: A

Explanation:
https://docs.mongodb.com/manual/sharding/

NEW QUESTION # 109
We have a restaurants collection with the following document structure: { _id: ObjectId("5eb3d668b31de5d588f42a7d"), address: { building: '605', coord: [ -74.0060152, 40.7372653 ], street: 'Hudson Street', zipcode: '10014' }, cuisine: 'French', grades: [ { date: ISODate("2014-06-30T00:00:00.000Z"), grade: 'A', score: 10 }, { date: ISODate("2013-05-20T00:00:00.000Z"), grade: 'A', score: 13 }, { date: ISODate("2012-12-11T00:00:00.000Z"), grade: 'A', score: 9 } ], name: 'La Ripaille Restaurant' } We need to use Aggregation Framework to calculate the total number of restaurants for top 5 cuisine (sorted in descending order by the number of restaurants). Expected output: [ { _id: 'American', total_restaurants: 6183 }, { _id: 'Chinese', total_restaurants: 2418 }, { _id: 'Cafao/Coffee/Tea', total_restaurants: 1214 }, { _id: 'Pizza', total_restaurants: 1163 }, { _id: 'Italian', total_restaurants: 1069 } ] Which pipeline should you use?

A. [{ $group: { _id: "$cuisine", total_restaurants: { $sum: 1 } } }, { $limit: 5 }, { $sort: { total_restaurants: -1 } }]
B. [{ $group: { _id: "$cuisine", total_restaurants: { $sum: 1 } } }, { $sort: { total_restaurants: 1 } }, { $limit: 5 }]
C. [{ $group: { _id: "$cuisine", total_restaurants: { $sum: 1 } } }, { $sort: { total_restaurants: -1 } }, { $limit: 5 }]
D. [{ $group: { _id: "cuisine", total_restaurants: { $sum: 1 } } }, { $sort: { total_restaurants: -1 } }, { $limit: 5 }]

Answer: C

Explanation:
https://docs.mongodb.com/manual/aggregation/

NEW QUESTION # 110
Which of the following roles provides the same read-only privileges as read role on all databases except local and config?

A. readWriteAnyDatabase
B. userAdminAnyDatabase
C. readAnyDatabase

Answer: C

Explanation:
https://docs.mongodb.com/manual/reference/built-in-roles/#mongodb-authrole-readAnyDatabase

NEW QUESTION # 111
Select all true statements regarding to $out stage.

A. $out operator must be the last stage in a pipeline.
B. All indexes on an existing collection are rebuilt when $out overwrites the collection.
C. $out operator creates collections in the same database as the source collection.
D. $out operator will create a new empty collection or overwrite an existing collection if the pipeline raises an error.
E. $out operator will overwrite an existing collection if specified.

Answer: A,B,C,E

Explanation:
https://docs.mongodb.com/manual/reference/operator/aggregation/out/

NEW QUESTION # 112
You have the following config file: storage: dbPath: /data/db systemLog: destination: file path: /var/log/mongod.log net: bindIp: localhost,192.168.168.62 security: keyFile: /var/pki/keyfile processManagement: fork: true Select all the directories that MongoDB must have access to

A. /var/pki
B. /data/db
C. /var/log

Answer: A,B,C

Explanation:
https://docs.mongodb.com/manual/reference/configuration-options/

NEW QUESTION # 113
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