Delete Operations MCQ , MongoDB Delete Practice Questions

Direction: Choose the correct option

Which method deletes a single document that matches a filter?

A. db.collection.remove()

B. db.collection.delete()

C. db.collection.deleteOne()

D. db.collection.removeOne()

Direction: Choose the correct option

What does `db.inventory.deleteMany({status: 'obsolete'})` do?

A. Deletes all documents with status 'obsolete'

B. Throws an error

C. Marks documents as obsolete

D. Deletes one document with status 'obsolete'

Direction: Choose the correct option

What is returned by a delete operation?

A. A result object with `acknowledged` and `deletedCount`

B. A boolean

C. The deleted documents

D. A count of remaining documents

Direction: Choose the correct option

What happens if the filter in `deleteOne()` matches multiple documents?

A. Only the first matching document is deleted

B. All matching documents are deleted

C. The operation fails

D. An error is thrown

Direction: Choose the correct option

How do you delete all documents from a collection?

A. db.collection.deleteAll()

B. db.collection.deleteMany({})

C. db.collection.drop()

D. db.collection.truncate()

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