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REDVision Global Technologies Mern Full Stack Developer Interview Questions and Answers
REDVision Global Technologies Mern Full Stack Developer Interview Experiences
1 interview found
I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. Node is single threaded then how to achieve asynchronous behaviour of it?
- Ans.
Node.js achieves asynchronous behavior through event-driven architecture and non-blocking I/O operations.
Node.js uses event-driven architecture to handle asynchronous operations.
It utilizes non-blocking I/O operations to allow multiple operations to be executed concurrently.
Node.js uses callbacks, promises, and async/await to manage asynchronous code execution.
Example: Using callbacks in Node.js to handle asynchronous
- Q2. What is lookup in mongodb?
- Ans.
Lookup in MongoDB is used to perform a left outer join to retrieve documents from another collection.
Lookup is used to combine data from two collections based on a common field.
It is similar to a SQL join operation.
Lookup is used in aggregation pipelines to fetch related documents from another collection.
Example: db.collection.aggregate([{ $lookup: { from: 'anotherCollection', localField: 'field', foreignField: 'field'
Interview Preparation Tips
Skills evaluated in this interview
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Software Developer Interview Questions & Answers
CapitalOne
VINAY KUMAR REDDY C
posted on 30 Aug 2016
I applied via Campus Placement
Interview Questionnaire
1 Question
- Q1. Task Scheduling
Interview Preparation Tips
Experience: Questions are very basic and easy to answer .Algorithms should be implemented on spot but they are also standard ones
Tips: read Richie and kernigan
Duration: 60 minutes
Round: Technical Interview
Experience: Nice question and very hard to solve .Though it is a standard problem but requires spontaneous thinking because there are some restrictions for it
Tips: Read cormen
General Tips: Learn all basic algorithms and be confident.
Skill Tips: Solve some puzzles
Skills: Problem Solving Skills, Approaching A Problem
Duration: 2
College Name: IIT Madras
Motivation: i like data engineering profile
Senior Software Developer Interview Questions & Answers
Airpay Payment Services
Anonymous
posted on 14 Apr 2024
Selected
I applied via Naukri.com and was interviewed in Mar 2024. There were 3 interview rounds.
Technical Aptitude on singalton pattern
(3 Questions)
- Q1. What is man in middle attack?
- Ans.
A man-in-the-middle attack is a cyber security attack where the attacker secretly intercepts and possibly alters the communication between two parties.
Attacker intercepts communication between two parties
Attacker may alter the communication
Commonly occurs in public Wi-Fi networks
Can lead to data theft or unauthorized access
- Q2. How to protect api?
- Ans.
Protecting API involves using authentication, authorization, encryption, rate limiting, and monitoring.
Implement authentication mechanisms such as OAuth, JWT, or API keys
Use authorization to control access to different parts of the API
Encrypt sensitive data using SSL/TLS
Implement rate limiting to prevent abuse and protect against DDoS attacks
Monitor API traffic for unusual activity and potential security threats
- Q3. Whats is csrf ?
- Ans.
CSRF stands for Cross-Site Request Forgery, a type of attack where a malicious website tricks a user into performing actions on another website without their knowledge.
CSRF attacks exploit the trust that a site has in a user's browser, by sending unauthorized requests using the user's session.
Prevent CSRF attacks by using tokens in forms, checking the origin of requests, and implementing proper authentication and autho...
(2 Questions)
- Q1. Why you want ti join airpay?
- Q2. Why you leave current organisation?
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
DSA leetcode on hackerrank
Java Full Stack Developer Interview Questions & Answers
CapitalOne
pola maithreya
posted on 7 Apr 2024
(2 Questions)
- Q1. Experience in ReactJS
- Ans.
I have 2 years of experience in ReactJS, including building interactive user interfaces and integrating with backend services.
Developed a responsive web application using ReactJS, Redux, and Material-UI
Implemented RESTful APIs to fetch and update data in the application
Utilized React Router for client-side routing and navigation
Worked on optimizing performance by using memoization and lazy loading techniques
- Q2. Experience in Spring Boot
Skills evaluated in this interview
I applied via Approached by company and was interviewed in Aug 2021. There were 2 interview rounds.
Quant focussed Case Study (be prepared for calculations)
(1 Question)
- Q1. Why are you looking for a change?
Interview Preparation Tips
I applied via Company Website and was interviewed before Oct 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Typical get to know you and behavioural questions
Interview Preparation Tips
Interview Preparation Tips
Experience: CAT-type data interpretation test.30 questions in 35 minutes.Fast graph interpretation and quick calculations.
Tips: CAT preparation will help.
Duration: 35 minutes
Total Questions: 30
Round: Case Study Interview
Experience: A simple case, based on the credit card industry or any other field, is given. Cases lay more focus on quantitative skills apart from the focus on asking the right questions.There is a shortlist made after each case round.
Tips: Fast calculation and insight into what data may be required to solve the case are essential.Practice the cases given on their website and at www.beprepared.in.
Round: Behavorial Interview
Experience: Questions are asked based on incidents- give examples of instances when you led a team successfully or when you had to go against your team, etc.
Tips: Practice HR questions from HLPQ.
General Tips: Positions Of Responsibility (PORs) are required but not mandatory. They are of secondary importance if one has scored well in the exam. A good CV with good internships/projects will help one to get shortlisted.
Skill Tips: "Student needs to be quick with simple percentage calculations."
Skills: Basic Quantitative skills
College Name: IIT Kharagpur
Interview Preparation Tips
Experience: Written Test ( DI questions, each involving 2-3 plots)
Round: Interview
Experience: Started with a “Tell me something about your-self question”. I believe it was just to set the ball rolling and was not evaluated. The interviewer then gave me a case question wherein I had to make a choice between a diesel and a petrol car. There were 3 parts to the question (some candidates were asked 1 / 2 as well). The first dealt with finding the breakeven point given the basic set of cost, fuel price and fuel consumption data. Next was to find breakeven considering the money was acquired at a certain rate of interest (bond/loan). Both these results involved basic calculation and I was comfortable with them. The final part was about calculating the breakeven, again, but this time considering depreciation. This is where I was caught off guard and though I did turn up with a figure, the interviewer was not completely satisfied.
General Tips: Do get a basic background of the firm and also about terms in the related field.
Skill Tips: I was not hesitant and was reasonably confident while answering. What went wrong was perhaps the fact that I was caught unaware of how depreciation works and how it had to be included in the equation. I fumbled a lot with the equation and puzzled as to where to include terms for depreciation etc.
College Name: IIT KANPUR
Interview Preparation Tips
Experience: There was test which was purely data analysis and calculator was allowed. So the procedure that they follow is that first they shortlist 50 people and a small case interview is followed. The case I was asked was to calculate the change in the cost of a grocery store if it has changed its model from cash on delivery with a physical store to an online portal which has cash on delivery option. As I had practiced it already I took some time to give structure and then gave 3-4 reasons for change in cost and then he gave me some numbers based on which I had to calculate the break even time period or amount . But I think he expected a little bit different approach or was searching for a different solution as I wasn't selected for the final interview sessions. I think 22 people were selected for the final interview session out of which 2 people were finally selected in Cap One.
College Name: IIT KANPUR
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REDVision Global Technologies Mern Full Stack Developer Interview Process
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