Insert Operations MCQ , MongoDB Insert Practice Questions

Direction: Choose the correct option

Which method inserts a single document into a collection?

A. db.collection.insert()

B. db.collection.insertOne()

C. db.collection.addOne()

D. db.collection.saveOne()

Direction: Choose the correct option

How do you insert multiple documents at once?

A. db.collection.insertAll()

B. db.collection.insertMany()

C. db.collection.insertMultiple()

D. db.collection.addMany()

Direction: Choose the correct option

What does `db.collection.insertOne()` return?

A. The inserted document

B. A boolean

C. The number of documents inserted

D. A result object with `acknowledged` and `insertedId`

Direction: Choose the correct option

What happens if you try to insert a document without an `_id` field?

A. MongoDB automatically generates an `_id` of type ObjectId

B. An error is thrown

C. `_id` is set to null

D. The operation fails

Direction: Choose the correct option

Given `db.users.insertMany([{name: 'Alice'}, {name: 'Bob'}])`, how many documents are inserted?

A. It depends

B. 2

C. 0

D. 1

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