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[General] MongoDB C100DEV Valid Test Pdf | New C100DEV Practice Questions

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【General】 MongoDB C100DEV Valid Test Pdf | New C100DEV Practice Questions

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MongoDB Certified Developer Associate Exam Sample Questions (Q20-Q25):NEW QUESTION # 20
Select all true statements regarding to the insert operation.
  • A. If you insert a document with no _id value specified, it will result in a write error.
  • B. If you insert document with a _id field value that already exists, an error will be raised.
  • C. MongoDB will automatically add an _id field when inserting document without specified _id field into a collection.
Answer: B,C
Explanation:
https://docs.mongodb.com/manual/ ... .collection.insert/

NEW QUESTION # 21
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 ] } You ran the command below: db.shipwrecks.getIndexes() And you got the following output: [ { v: 2, key: { _id: 1 }, name: '_id_' }, { v: 2, key: { coordinates: '2dsphere' }, name: 'coordinates_2dsphere', '2dsphereIndexVersion': 3 } ] How can you remove the geospatial index on the coordinates field?
  • A. db.shipwrecks.dropCollection('coordinates_2dsphere')
  • B. db.shipwrecks.dropIndex('_id_')
  • C. db.shipwrecks.dropIndex('coordinates_2dsphere')
Answer: C
Explanation:
https://docs.mongodb.com/manual/core/2dsphere/

NEW QUESTION # 22
Assign typical operational tasks to the Data Scientist.
  • A. write data, read data
  • B. write data
  • C. create user, create index
  • D. read data
Answer: D

NEW QUESTION # 23
Select true statement regarding to the MongoDB Atlas. (select 1)
  • A. MongoDB Atlas includes many tools and services specifically designed for the MongoDB database.
  • B. MongoDB Atlas is a MongoDB service that can work with any database.
Answer: A
Explanation:
Explanation: https://docs.atlas.mongodb.com/

NEW QUESTION # 24
What is MongoDB Charts?
  • A. MongoDB product that helps you visualize data stored in an Atlas cluster.
  • B. A feature that displays data about the performance of your Atlas cluster.
  • C. An application that allows you to embed on your website visualizations that are created in other applications.
Answer: A
Explanation:
https://docs.mongodb.com/charts/

NEW QUESTION # 25
......
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