MongoDB quiz

Question 1

Which languages are MongoDB written in?

Answer 1

C++, Go, JavaScript, Python

Question 2

Which format is supported by MongoDB?

Answer 2

BSON (Binary JSON)

Question 3

MongoDB queries can return specific fields of documents which also include user-defined _____ functions.

Answer 3

JavaScript

Question 4

Initial release of MongoDB was in the year of _____.

Answer 4

2009

Question 5

MongoDB has been adopted as _____ software by a number of major websites and services.

Answer 5

backend

Question 6

MongoDB is a _____ database that provides high performance, high availability, and easy scalability.

Answer 6

document

Question 7

Dynamic schema in MongoDB makes _____ easier for applications.

Answer 7

polymorphism

Question 8

With _____, MongoDB supports a complete backup solution and full deployment monitoring.

Answer 8

MMS

Question 9

MongoDB provides high _____ with replica sets.

Answer 9

availability

Question 10

_____ replicas maintain a copy of the data on the primary using built-in replication.

Answer 10

Secondary

Question 11

MongoDB scales horizontally using _____ for load balancing purpose.

Answer 11

Sharding

Question 12

MongoDB can be used as a(n) _____, taking advantage of load balancing and data replication features over multiple machines for storing files.

Answer 12

AMS (Automatic Maintenance System)

Question 13

Which of the following can be used for batch processing of data and aggregation operations ?

Answer 13

MapReduce

Question 14

MongoDB supports fixed-size collections called _____ collections.

Answer 14

capped

Question 15

MongoDB uses a _____ lock that allows concurrent read access to a database but exclusive write access to a single write operation.

Answer 15

readers-writer

Question 16

_____ sorting is not supported by MongoDB.

Answer 16

collation

Question 17

_____ are a NoSQL Database Type.

Answer 17

Document databases

Question 18

_____ is a wide-column store.

Answer 18

Cassandra

Question 19

“Sharding” a database across many server instances can be achieved with _____.

Answer 19

SAN (Storage Area Network)

Question 20

Most NoSQL databases support automatic _____, meaning that you get high availability and disaster recovery

Answer 20

replication

Question 21

_____ is the simplest NoSQL database.

Answer 21

Key-value

Question 22

Which of the following stores are used to store information about networks, such as social connections?

Answer 22

Graph

Question 23

What is the interactive shell for MongoDB called?

Answer 23

mongo

Question 24

Administrative information in MongoDB can also be accessed through _____.

Answer 24

web interface

Question 25

_____ is web-based client software for MongoDB.

Answer 25

Database Master

Question 26

Which of the following provides statistics on the per-collection level?

Answer 26

mongotop

Question 27

Which of the following is a command-line tool that displays a summary list of status statistics for a currently running MongoDB instance?

Answer 27

mongostat

Question 28

mongostat tool is similar to the UNIX/Linux _____ utility.

Answer 28

vmstrat

Question 29

Which of the following tool is similar to the UNIX/Linux top utility?

Answer 29

mongotop

Question 30

mongosniff requires the _____ network library and is only available for Unix-like systems.

Answer 30

Libpcap

Question 31

Which of the following does not dump the content of the local database?

Answer 31

mongodump

Question 32

To backup all the databases in a cluster via mongodump, you should have the _____ role.

Answer 32

backup

Question 33

Which of the following is a routing service for MongoDB shard configurations that processes queries from the application layer?

Answer 33

mongos

Question 34

_____ sends all diagnostic logging information to a log file instead of to standard output or to the host’s syslog system.

Answer 34

logpath

Question 35

Which of the following is the primary daemon process for the MongoDB system?

Answer 35

mongod

Question 36

Which of the following is a diagnostic tool for inspecting BSON files?

Answer 36

bsondump

Question 37

_____ is a utility to check disk I/O performance independently of MongoDB.

Answer 37

mongoperf

Question 38

_____ utility makes it possible to manipulate files stored in your MongoDB instance in GridFS objects from the command line.

Answer 38

mongofiles

Question 39

Which of the following is a part of the standard MongoDB distribution and provides a full JavaScript environment ?

Answer 39

mongo