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Total 134 Questions | Updated On: Nov 18, 2024

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Question 1

You perform the following operation in the shell: db.foo.insert( { } ); What gets inserted?

A : A document will be inserted with the same _id as the last document inserted

B : A document that matches the collection's existing schema, but with null fields

C : A document with an _id assigned to be an Objectld

D : An empty document

E : No document will be inserted; an error will be raised

Answer: C

Question 2

'mongoimport' command is used for

A : Batch data insertion

B : None of the above

C : Multiple command import

D : Multiple command insertion

Answer: A

Question 3

Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?

A : upsert command instead of update command

B : This has to be handled in application code (Node.js, PHP, JAVA, C#, etc.) and cannot be handled in mongo shell query

C : {update: true, insert: true} as the third parameter of update command

D : Specify {upsert : true } as the third parameter of update command

Answer: D

Question 4

Which option can be used with update command so that a new document gets created if no matching document is found based on the query condition?

A : upsert command instead of update command

B : {update: true, insert: true} as the third parameter of update command

C : This has to be handled in application code (Node.js, PHP, JAVA, C#, etc.) and cannot be handled in mongo shell query

D : Specify {upsert : true } as the third parameter of update command

Answer: D

Question 5

Below is a sample document of 'orders' collection

Other-Image-2821600ab-2cee-4cd9-a321-aa3202108fcf

A : $project

Answer: A

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Total 134 Questions | Updated On: Nov 18, 2024

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