MongoDB CRUD Operation: Beginner-Level Quiz

MongoDB CRUD Operations

This quiz evaluates your understanding of MongoDB’s core CRUD operations—Create, Read, Update, and Delete. Mastery of these operations is essential for working with MongoDB databases, ensuring efficient data management and manipulation. Good luck!

1 / 20

Which of the following keys is used to denote uniqueness in the collection?

_id

id_

none of the mentioned

2 / 20

___________ command display the list of databases.

Show data

Show db

Show dbs

Display dbs

3 / 20

In MongoDB _________ operations modify the data of a single collection.

GRID

READ

CRUD

All of the mentioned

4 / 20

When you query a collection, MongoDB returns a ________ object that contains the results of the query.

cursor

row

colums

none of the mentioned

5 / 20

Which of the following method is called while accessing documents using the array index notation?

cursor.toArray()

doc.toArray()

cur.toArray()

all of the mentioned

6 / 20

Which of the following methods is used to query documents in collections?

shell

replace

move

find

7 / 20

Which of the following statements is not correct?

MongoDB works hard to be very easy to install, configure, maintain, and use

MongoDB does not provide a lot of the features of a traditional RDBMS

MongoDB works right out of the box, and you can dive right into developing your application, instead of spending a lot of time fine-tuning obscure database configurations

None of the above

8 / 20

Which of the following method corresponds to Order by clause in SQL?

orderby()

sort()

order()

all of the mentioned

9 / 20

Which of the following statements is not correct?

A single MongoDB server typically has single databases

Collection is the equivalent of an RDBMS table

Database is a physical container for collections

All of the above

10 / 20

Which of the following statements is correct?

Collections do not enforce a schema

Collection is a group of MongoDB documents

MongoDB is an open-source document database, and leading NoSQL database

None of the above

11 / 20

Which of the following line skips the first 5 documents in the bios collection and returns all remaining documents?

db.bios.find().skip( 1 )

db.bios.find().sort( 5 )

db.bios.find().limit( 5 )

db.bios.find().skip( 5 )

12 / 20

Which of the following also returns a list of databases?

display dbs

show database

show databases

all of the mentioned

13 / 20

Which of the following method returns a cursor?

sort

find

skip

all of the mentioned

14 / 20

Which of the following preference determines how the client direct read operations to the set?

update

write

delete

read

15 / 20

Which of the following statements is wrong?

Documents have static schema in MongoDB

Indexes can include keys from embedded documents and arrays

Eventually-consistent reads can be distributed over replicated servers

None of the mentioned

16 / 20

Which of the following statement will insert 400 documents in to the testData collection?

insertData("test", "testData", 200)

insertData("test", "testData", 600)

insertData("test", "testData", 400)

None of the above

17 / 20

Command to check the existence of collection is _____________.

show collect

show collection

show collections

none of the mentioned

18 / 20

The mongo shell loads and parses the ___________ file on startup.

mongorc.js

mongo.js

mongoc.js

all of the mentioned

19 / 20

A query may include a ___________ that specifies the fields from the matching documents to return.

projection

union

selection

none of the mentioned

20 / 20

The __________ method limits the number of documents in the result set.

limitOf()

limit()

limitBy()

none of the mentioned

Your score is

The average score is 0%

MongoDB CRUD Operation uses MongoDB’s syntax and commands to perform operations effectively. This includes but is not limited to the use of filters, updates, and delete criteria for data manipulation.

This quiz is designed for beginners and developers who are new to MongoDB and wish to test their knowledge.

Good luck.