MongoDB Test

Question 2: Which of the following commands starts the MongoDB server?

• mongo
• mongosh
• mongoserver
• mongod

Question 3: _________ is the command-line client of MongoDB Database?

• Mongo Shell
• Web Application
• Windows Service
• Windows Application

Question 4: Which of the following commands starts Mongo Shell?

• mongo
• mongosh
• mongod
• shell

Question 5: which of the following commands creates a new database?

• create
• switch
• use
• new

Question 6: MongoDB collections are similar to _______ in RDBMS.

• Views
• Tables
• Rows
• Columns

Question 7: Which of the following method creates a new collection?

• db.useCollection('collection-name')
• db.collection('collection-name')
• db.createCollection('collection-name')
• new db.createCollection('collection-name')

Question 8: MongoDB documents are similar to _______ in RDBMS.

• Column
• Database
• Records
• Tables

Question 9: MongoDB stores data as ______ document.

• JSON
• BSON
• XML
• YML

Question 10: Which of the following methods are used to insert documents in a collection?

• insertOne()
• insertMany()
• insert()
• All of the above

Question 11: Which of the following command is used to import data into collection?

• mongoimport
• import
• insertMany
• mongo-import

Question 12: which of the following method is used to retrieve data from a collection?

• find()
• findOne()
• aggregate()
• All of the above

Question 13: The find() method returns a _____ object.

• List
• Cursor
• Collection
• Record

Question 14: Which of the following methods is used to sort the data?

• db.collection.sort()
• db.sort()
• db.collection.find().sort()
• db.find().sort()

Question 15: which of the following methods update multiple documents in a collection?

• db.collection.update()
• db.collection.updateMany()
• db.collection.updateOne()
• All of the above

Question 16: Which of the following methods deletes a single document in a collection?

• db.collection.delete()
• db.collection.deleteOne()
• db.collection.deleteMany()
• All of the above

Question 17: Which of the following deletes all the documents in a collection?

• db.collection.deleteMany({ })
• db.collection.clear()
• db.collection.deleteAll({ })
• db.collection.delete()

Question 18: The aggregation pipeline is an array of one or more _____ passed in the db.aggregate() method.

• Collections
• Stages  
• Documents
• Methods

Question 19: Which of the following stages is equivalent to the find() method?

• $group
• $match
• $sort
• $select

Question 20: ______is a method for distributing data across multiple machines. 

• Replication
• Sharding
• Load balancing
• Transaction