Delete Operations

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Question 1

What is the purpose of delete operations in MongoDB?

  • Add documents

  • Retrieve documents

  • Modify documents

  • Remove documents

Question 2

Which method deletes a single document in MongoDB?

  • deleteMany()

  • removeOne()

  • deleteOne()

  • dropOne()

Question 3

Which method deletes multiple documents?

  • deleteAll()

  • deleteMany()

  • removeMany()

  • dropMany()

Question 4

What happens if no filter is given in deleteMany()?

  • Error occurs

  • Deletes one document

  • Deletes all documents

  • Does nothing

Question 5

Which command is used to delete an entire database?

  • db.deleteDatabase()

  • db.removeDatabase()

  • db.dropDatabase()

  • db.clearDatabase()

Question 6

Which method deletes only the first matching document?

  • deleteMany()

  • deleteOne()

  • removeAll()

  • drop()

Question 7

What is required to delete specific documents?

  • Index

  • Filter condition

  • Database name

  • Schema

Question 8

What happens after db.collection.drop()?

  • Only documents are deleted

  • Collection is removed completely

  • Database is deleted

  • Nothing happens

Question 9

Which operation is more dangerous if used without conditions?

  • deleteOne()

  • find()

  • deleteMany()

  • updateOne()

Question 10

Delete operations belong to which CRUD category?

  • Create

  • Read

  • Update

  • Delete

There are 10 questions to complete.

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