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Free PDF Quiz 2023 MongoDB The Best C100DEV Vce Free

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    The MongoDB C100DEV Exam is a great way for developers to demonstrate their expertise in working with MongoDB and to become MongoDB Certified Developers. Certified developers have access to a range of benefits, including a digital badge, a listing in the official MongoDB Certified Professionals directory, access to exclusive events and resources, and more. The certification is also recognized by employers as a valuable credential that demonstrates a developer's ability to work with MongoDB.

    MongoDB Certified Developer Associate Exam Sample Questions (Q20-Q25):

    NEW QUESTION # 20
    Suppose we have a shipwrecks collection with the following document structure: { _id: ObjectId("578f6fa2df35c7fbdbaed8ce"), feature_type: 'Wrecks - Visible', watlev: 'always dry', coordinates: [ -79.9469681, 9.3729954 ] } Your application will often query based on the coordinates field. How to create a 2dsphere geospatial index for the coordinates field?

    • A. db.shipwrecks.createIndex({'coordinates': '1'})
    • B. db.shipwrecks.createIndex({'coordinates': '2dsphere'})
    • C. db.shipwrecks.createIndex({'coordinates': 'text'})
    • D. db.shipwrecks.createIndex({'coordinates': '2d'})

    Answer: B

    Explanation:
    https://docs.mongodb.com/manual/core/2dsphere/


    NEW QUESTION # 21
    The $sortByCount stage is equivalent to:

    • A. $match + $sort
    • B. $group + $sort
    • C. $sort + $count
    • D. $text + $search + $sort
    • E. $count + $sort

    Answer: B

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


    NEW QUESTION # 22
    What data structure is used to store the newly created index in MongoDB?

    • A. Heap
    • B. Dictionary
    • C. B-tree
    • D. Graph
    • E. Binary Tree

    Answer: C

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


    NEW QUESTION # 23
    Suppose you are connected to mongod instance that is already running on port 27000 as admin user. You have to export reviews collection from the restaurants database to JSON file named reviews.json. Which command should you use?

    • A. mongodump --db restaurants --collection reviews -o reviews.json
    • B. mongoexport --db restaurants --collection reviews -o export.json
    • C. mongoexport --db restaurants --collection reviews -o reviews.json

    Answer: C

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


    NEW QUESTION # 24
    How to shutdown the server? (Mongo shell)

    • A. use admin
    • B. db.disconnect()
    • C. use admin
    • D. use admin
    • E. db.shutdown()
    • F. db.shutdownServer()

    Answer: F

    Explanation:
    https://docs.mongodb.com/manual/reference/method/db.shutdownServer/


    NEW QUESTION # 25
    ......

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