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Mantra Technologies
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Mantra Technologies React Js Frontend Developer Interview Questions and Answers
Mantra Technologies React Js Frontend Developer Interview Experiences
2 interviews found
(2 Questions)
- Q1. Asked about my project
- Q2. How do you pass data
- Ans.
Data can be passed in React by using props, state, context, or Redux store.
Props are used to pass data from parent to child components.
State is used to manage data within a component and can be passed down as props.
Context allows data to be passed down through the component tree without having to pass props manually.
Redux store can be used for managing global state that can be accessed by any component.
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Jun 2023. There were 3 interview rounds.
Questions about arrays, and questions about frontend.
(2 Questions)
- Q1. About react js and redux
- Q2. About vue js and node js
Interview Preparation Tips
completed graduation is must.
The manager seems Harsh with the employees.
Top trending discussions
Interview questions from similar companies
I applied via LinkedIn and was interviewed in Dec 2020. There were 3 interview rounds.
Interview Questionnaire
5 Questions
- Q1. JS Prototype usage and functionality.
- Ans.
JS Prototype is a mechanism for inheritance and sharing properties among objects.
Prototype is a property of every JavaScript function.
It allows objects to inherit properties and methods from other objects.
Modifying the prototype of a function affects all instances of that function.
Prototype chain is used to look up properties and methods of an object.
Prototype can be used to add new methods and properties to existing o
- Q2. Node- without any loop need to check how can you find the total number
- Ans.
To find the total number without any loop in Node.js
Use the reduce() method to sum up the values in an array
Use the length property of an array to get the total number of elements
Use the Object.keys() method to get the total number of keys in an object
- Q3. Node - what is difference between promise and async await and callback.
- Ans.
Promises, async/await, and callbacks are all ways to handle asynchronous operations in Node.js.
Callbacks are functions passed as arguments to another function and called when the operation is complete.
Promises represent a value that may not be available yet, but will be resolved at some point in the future.
Async/await is a syntax for writing asynchronous code that looks like synchronous code.
Callbacks are the oldest an...
- Q4. Node - why do we use promise.
- Ans.
Promises are used in Node to handle asynchronous operations and avoid callback hell.
Promises simplify error handling and make code more readable.
Promises allow for chaining multiple asynchronous operations.
Promises can be used with async/await to write synchronous-looking code.
Example: fetching data from an API using axios library with promises.
Example: reading a file with promises in Node's fs module.
- Q5. Node - use of Sequelize (ORM)
- Ans.
Sequelize is an ORM for Node.js that supports multiple databases and provides easy data modeling and querying.
Sequelize is used to interact with databases in Node.js
It supports multiple databases like MySQL, PostgreSQL, SQLite, etc.
It provides easy data modeling and querying with its object-relational mapping
Example: const sequelize = new Sequelize('database', 'username', 'password', { dialect: 'mysql' });
Interview Preparation Tips
Skills evaluated in this interview
Shubh S
(2 Questions)
- Q1. Introduce yourself
- Q2. Explain your projects
Selected
I applied via Referral and was interviewed before Apr 2023. There were 3 interview rounds.
Used an online IDE and asked general DS Algo questions
(1 Question)
- Q1. System Design HLD question to make URL shortener
(1 Question)
- Q1. General HR Aptitude questions
Interview Preparation Tips
- Java
- OOPS
Selected
I appeared for an interview before Dec 2023.
Online assessment with quantitative and qualitative questions
Some Tree traversal coding question
(2 Questions)
- Q1. Load balancer design question
- Q2. Technical challenges faced
Software Developer Interview Questions & Answers
CBTS TECHNOLOGY SOLUTIONS INDIA LLP
Anonymous
posted on 12 Apr 2024
I applied via Approached by Company and was interviewed in Mar 2024. There were 2 interview rounds.
Logic and MCQ were there
(2 Questions)
- Q1. How cobol db 2 works? how to add checkpoint logic.
- Ans.
COBOL DB2 is a programming language used for database management. Checkpoint logic is used to ensure data integrity and recoverability.
COBOL DB2 is used for accessing and manipulating data in DB2 databases.
Checkpoint logic in COBOL DB2 involves saving the current state of the database at specific points to ensure data integrity.
To add checkpoint logic, you can use COMMIT and ROLLBACK statements in your COBOL DB2 progra...
- Q2. How jcl works, how to do restart
- Ans.
JCL (Job Control Language) is used to control batch jobs on mainframe systems. Restarting a job involves identifying the step where it failed and resubmitting the job from that step.
JCL is used to define and control batch jobs on mainframe systems
To restart a job, identify the step where it failed
Modify the JCL to start from the failed step by specifying the restart parameter
Submit the modified JCL to restart the job
Interview Preparation Tips
Skills evaluated in this interview
Software Developer Interview Questions & Answers
CBTS TECHNOLOGY SOLUTIONS INDIA LLP
GOKULA KRISHNAN
posted on 25 Jul 2024
It was easy, the topic is upi
Aptitude + coding Test
(2 Questions)
- Q1. It's about my projects
- Q2. And few Javascript questions
(1 Question)
- Q1. General HR questions
Quantitative Aptitude
(2 Questions)
- Q1. To write syntax for a problem using any programming language.
- Q2. Tell me about your projects and Internship experience.
(1 Question)
- Q1. Questions were related to Hobbies, extra curricular activities and some questions of analytical ability such as color cube, maths, etc. It was in general.
Interview Preparation Tips
Study about your projects that you have done in your graduation.
Be prepared on questions regarding your skill set. For e.g- object oriented programming concepts, Data structures, Database, etc.
Lastly, Be confident!
And, You are good to Go.
Only one written test consists of aptitude questions and one coding question. coding question is easy-moderate
(1 Question)
- Q1. There are 2 technical rounds .In first round they have covered Java theory concepts and oops basic questions and asked me to write any sorting code and a SQL query that is print who's salary lies between 1...
(1 Question)
- Q1. About yourself, Where you are after 5 years,Are you ready to relocate,about company and some basic hr questions.
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Mantra Technologies React Js Frontend Developer Interview Process
based on 2 interviews
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