Online Access Free MongoDB.C100DBA.v2022-09-26.q45 Practice Test (Page 2)

Which of the following is correct about MongoDB?

A.MongoDB supports collection joins

B.MongoDB supports some of the SQL functions

C.MongoDB supports geospatial indexes

D.MongoDB uses JSON format to represent documents

MongoDB is a schema-less design.

A.False

B.True

Write the command(s) are correct to enable sharding on a database "testdb" and shard a collection "testCollection" with _id as shard key.

Which of the following collections stores authentication credentials in MongoDB?

A.local.users

B.users.users

C.system.users

D.test.users

What is the output of following two commands in MongoDB: db. posts. insert({n_id":l}) db.posts.insert({"_id":l})

A.Two documents will be inserted with _id as 1

B.This will throw a duplicate key error

C.It will insert two documents and throw a warning to the user

D.MongoDB will automatically increment the _id of the second document as 2

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