Nodejs: MongoDB

What is MongoDB primarily known as?

• Relational Database Management System

• Document-Oriented Database Management System

• Graph Database Management System

• Key-Value Database Management System

Which of the following is a valid data type in MongoDB?

• String

• Float

• Date

• All of the options

Which MongoDB operator is used to query for documents where a specific field's value is greater than a specified value?

• $eq

• $gt

• $lt

• $in

What is the purpose of the find method in MongoDB?

• To update documents in a collection

• To delete documents from a collection

• To insert documents into a collection

• To query documents in a collection

Which command is used to create a new table/collection in MongoDB if it doesn't exist?

• db.createDatabase()

• db.ensureDatabase()

• db.newDatabase()

• db.createCollection()

What is the default port number for MongoDB?

• 27017

• 8080

• 3000

• 5432

Which MongoDB operation is used to insert a new document into a collection?

• db.collection.create()

• db.collection.add()

• db.collection.insertOne()

• db.collection.updateOne()

Which MongoDB update method updates a single document matching the specified criteria

• updateOne()

• updateMany()

• update()

• findOneAndUpdate()

What happens if you attempt to update a document in MongoDB with the upsert option set to true, but the document does not exist

• An error is thrown

• A new document is inserted with the specified update.

• The existing document is updated.

• Nothing happens.

Which MongoDB method is used to remove a single document from a collection that matches a specified query?

• db.collection.delete()

• db.collection.removeOne()

• db.collection.deleteOne()

• db.collection.remove()