Skip to main content

71 Best MongoDB Interview Questions and Answers - [MongoDB]

“MongoDB is the fastest growing database because it’s provided more security protection mechanisms than others and also more reliable in cloud computing environments. It is secure architecture for your deployment”.

It is document oriented database and its store the data in document with JSON format.

Most Popular 71 Key Questions for MongoDB Interviews.

What is MongoDB and Why we use? What's New in MongoDB 3.2?
Is MongoDB Support Relationship? Is MongoDB Support Replication?
What are journaling in MongoDB? What kind of database is MongoDB?
In MongoDB, What is a namespace? In which language MongoDB is written?
Do MongoDB databases have tables and schemas? What types of languages use to work with MongoDB?
Which are the most powerful features in MongoDB? What is NoSQL Database and why you use NoSQL Database?
Is NoSQL Database Types? Is NoSQL Database will replace to RDBMS?
Does MongoDB support SQL Server? Does MongoDB support ACID Transactions?
What is the difference between MongoDB and CouchDB? What are different between MongoDB and Sql Server databases?
How MongoDB is better than other SQL Server databases? What are difference between SQL Server and NoSQL Database?
Now days, what makes MongoDB best? How to create primary/foreign key relationships in MongoDB?
What are 32-bit nuances? Can MongoDB used for Cache Management?
Why does Profiler use in MongoDB? In MongoDB, What is a covered query?
In MongoDB, What is Aggregation? In MongoDB, What is Sharding?
Why MongoDB data files so large (in size)? In MongoDB, What is GridFS?
Is MongoDB support null values? In MongoDB, How do I do transactions/locking?
In MongoDB, What is the Master or primary key? In MongoDB, What is secondary or slave?
In MongoDB, How does sharding work with replication? In MongoDB, Can I remove old files in the move Chunk directory?
How can I see the connections which you used in mongos? What are the limitations of MongoDB?
In MongoDB, What is Replication Factor? In MongoDB, What is dynamic Schema?
In MongoDB, What is BSON and how can restore this file? In MongoDB, How can you take database backup?
In MongoDB, What is Replication? In MongoDB, What is the role of 8 Analysers?
In MongoDB, if user removed to object attribute that attribute is deleted from the storage layer? If yes, then how? In MongoDB, Whether use to safe backup log feature?
In MongoDB, How to update operations immediately sync to disk? In MongoDB, How to perform transactions/lock?
In MongoDB, How sharding and replication work together? In MongoDB, How do you configure to cache size for MMAPv1?
Does MongoDB handle application level caching? Why MongoDB logging so many “Connection Accepted” events?
Does MongoDB run on Amazon EBS? In MongoDB, How is Query injection and how to handle it?
How can you enter multi line operations in the mongo shell? How can you access different databases temporarily?
Is mongo shell supported to tab completion? How can you customize to mongo shell prompt?
Can you edit long shell operations with an external text editor? What types of locking use in MongoDB?
How do you see the locking status in mongo instances? Can you perform read/write operation for ever yield lock?
In MongoDB, Which operations lock the database? In MongoDB, Which commands you use to lock the database?
In MongoDB, Can you lock more than one database at the same time? How to create Index after every query insert?
How to know, what indexes exist in a collection? How to determine the size of an index?
What happen when an index does not fit into RAM?

I hope you are enjoying with this post! Please share with you friends. Thank you!!

Labels

Labels:
By Anil Singh | Rating of this article (*****)

Popular posts from this blog

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin
Read more

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVADOR
Read more

25 Best Vue.js 2 Interview Questions and Answers

What Is Vue.js? The Vue.js is a progressive JavaScript framework and used to building the interactive user interfaces and also it’s focused on the view layer only (front end). The Vue.js is easy to integrate with other libraries and others existing projects. Vue.js is very popular for Single Page Applications developments. The Vue.js is lighter, smaller in size and so faster. It also supports the MVVM ( Model-View-ViewModel ) pattern. The Vue.js is supporting to multiple Components and libraries like - ü   Tables and data grids ü   Notifications ü   Loader ü   Calendar ü   Display time, date and age ü   Progress Bar ü   Tooltip ü   Overlay ü   Icons ü   Menu ü   Charts ü   Map ü   Pdf viewer ü   And so on The Vue.js was developed by “ Evan You ”, an Ex Google software engineer. The latest version is Vue.js 2. The Vue.js 2 is very similar to Angular because Evan You was inspired by Angular and the Vue.js 2 components looks like -
Read more

React | Encryption and Decryption Data/Text using CryptoJs

To encrypt and decrypt data, simply use encrypt () and decrypt () function from an instance of crypto-js. Node.js (Install) Requirements: 1.       Node.js 2.       npm (Node.js package manager) 3.       npm install crypto-js npm   install   crypto - js Usage - Step 1 - Import var   CryptoJS  =  require ( "crypto-js" ); Step 2 - Encrypt    // Encrypt    var   ciphertext  =  CryptoJS . AES . encrypt ( JSON . stringify ( data ),  'my-secret-key@123' ). toString (); Step 3 -Decrypt    // Decrypt    var   bytes  =  CryptoJS . AES . decrypt ( ciphertext ,  'my-secret-key@123' );    var   decryptedData  =  JSON . parse ( bytes . toString ( CryptoJS . enc . Utf8 )); As an Example,   import   React   from   'react' ; import   './App.css' ; //Including all libraries, for access to extra methods. var   CryptoJS  =  require ( "crypto-js" ); function   App () {    var   data
Read more

AngularJs input date format calendar

Table of Context bout  the input date.  Click for live demo on plnker 1. Allow to use of a custom date format like "yyyy/MM/dd" or "yyyy-MM-dd" etc. 2. Allow to check the input date typed by the user is correct or not. 1 2 3 4 //The model must be a Date object, otherwise Angular will throw an error. //The error is Invalid Date objects will be rendered as an empty string. i.e. The dates whose getTime() is NaN. //The model must be a Date object, otherwise Angular will throw an error. //The error is Invalid Date objects will be rendered as an empty string. i.e. The dates whose getTime() is NaN. The Example 1 code as given below. 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 <!doctype html> <html lang= "en" > <head>      <meta charset= "utf-8" />      <script src= " http://ajax.googleapis.com/ajax/lib
Read more