Quiz about Delete Operations
  • Placement 360 CourseExplore

    • Delete Operations

    Last Updated :
    Discuss
    Comments

    Question 1

    What is the purpose of delete operations in MongoDB?

    • A

      Add documents

    • B

      Retrieve documents

    • C

      Modify documents

    • D

      Remove documents

    Question 2

    Which method deletes a single document in MongoDB?

    • A

      deleteMany()

    • B

      removeOne()

    • C

      deleteOne()

    • D

      dropOne()

    Question 3

    Which method deletes multiple documents?

    • A

      deleteAll()

    • B

      deleteMany()

    • C

      removeMany()

    • D

      dropMany()

    Question 4

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

    • A

      Error occurs

    • B

      Deletes one document

    • C

      Deletes all documents

    • D

      Does nothing

    Question 5

    Which command is used to delete an entire database?

    • A

      db.deleteDatabase()

    • B

      db.removeDatabase()

    • C

      db.dropDatabase()

    • D

      db.clearDatabase()

    Question 6

    Which method deletes only the first matching document?

    • A

      deleteMany()

    • B

      deleteOne()

    • C

      removeAll()

    • D

      drop()

    Question 7

    What is required to delete specific documents?

    • A

      Index

    • B

      Filter condition

    • C

      Database name

    • D

      Schema

    Question 8

    What happens after db.collection.drop()?

    • A

      Only documents are deleted

    • B

      Collection is removed completely

    • C

      Database is deleted

    • D

      Nothing happens

    Question 9

    Which operation is more dangerous if used without conditions?

    • A

      deleteOne()

    • B

      find()

    • C

      deleteMany()

    • D

      updateOne()

    Question 10

    Delete operations belong to which CRUD category?

    • A

      Create

    • B

      Read

    • C

      Update

    • D

      Delete

    There are 10 questions to complete.

    Take a part in the ongoing discussion