AmbitionBox
Interview Questions
- Reviews
- Salaries
- Interview Questions
- About Company
- Benefits
- Jobs
- Office Photos
- Community
Add office photos
Filter interviews by
Duplex Technology Interview Questions, Process, and Tips
Duplex Technology Interview Experiences
1 interview found
Anonymous
Selected
I applied via Walk-in and was interviewed before Oct 2023. There were 2 interview rounds.
(6 Questions)
- Q1. About the Project
- Q2. Basic in JavaScript , Event Loop , Asynchronous Programming, closures , Mongodb Aggregation Pipile
- Q3. Diff b/w sql / nosql
- Ans.
SQL is a relational database management system, while NoSQL is a non-relational database management system.
SQL databases are table-based and have a predefined schema, while NoSQL databases are document-based, key-value pairs, graph databases, or wide-column stores.
SQL databases are good for complex queries and transactions, while NoSQL databases are better for hierarchical data storage.
Examples of SQL databases include...
- Q4. Asking about the Nest.js middleware
- Q5. Nest.js Pipiline , Gaurd
- Q6. Given me the coding Question to resolve the multiple promiss in using promiss.all()
(9 Questions)
- Q1. React js ( vertual Dom , Real Dom )
- Q2. Feature of React using advanced and disadvantage
- Ans.
React's advanced feature is virtual DOM for efficient rendering, but it can be complex for beginners.
Virtual DOM allows React to update only the necessary parts of the actual DOM, improving performance.
Advanced state management with tools like Redux or Context API.
Server-side rendering for better SEO and initial load performance.
Component-based architecture for reusability and maintainability.
Complex learning curve for...
- Q3. Hooks, React life cycle
- Q4. UseMemo , use of useMemo
- Q5. UseRef , forwordRef , both uses and example
- Q6. Coding question gives me create excel sheet to fill the data Drag and drop the Data
- Q7. Create multiselect dropdown with scrach , one select have to choose the other dropdown option
- Q8. Implement the file uploads system coding task multiselect file uplods
- Ans.
Implementing a multiselect file upload system for a MERN stack application.
Use a library like Multer for handling file uploads in Node.js
Create a form in React with multiple file input fields for selecting multiple files
Send the selected files to the server using a POST request
Handle the file uploads on the server side and save them to a designated folder
- Q9. Create product , perform curd opration , make the suggetion in this cart
- Ans.
Create a product cart with CRUD operations and suggestion feature.
Create a database schema for products
Implement CRUD operations for adding, updating, and deleting products
Implement a suggestion feature based on user preferences or past purchases
Skills evaluated in this interview
Mern Stack Developer Interview Questions asked at other Companies
Interview questions from similar companies
I applied via Campus Placement and was interviewed before Jul 2021. There were 4 interview rounds.
Aptitude test on CS subjects like C programming, DBMS, CN, and OS.
There were 2 input-output based questions of easy to moderate level
Every candidate was given an individual topic and was asked to speak on it
(1 Question)
- Q1. Some typical HR questions
Interview Preparation Tips
I applied via Referral and was interviewed before Jan 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Java questions
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Feb 2021. There were 3 interview rounds.
Aptitude round consists Logical reasoning, General Aptitude, Grammar related questions etc. All are moderate level questions.
(3 Questions)
- Q1. Explain OOPs w.r.t Java
- Ans.
OOPs is a programming paradigm that uses objects to represent real-world entities. Java is an OOPs language.
OOPs stands for Object-Oriented Programming System
Java is a class-based OOPs language
Encapsulation, Inheritance, Polymorphism, and Abstraction are the four pillars of OOPs
Objects have state and behavior
Java supports interfaces, which allow for multiple inheritance
Example: A car can be represented as an object wit...
- Q2. Explain about the projects that you have worked on
- Q3. Explain how Java solves machine dependency of code execution
- Ans.
Java solves machine dependency by using bytecode and virtual machine.
Java code is compiled into bytecode which is platform-independent
The bytecode is executed by the Java Virtual Machine (JVM) which is platform-specific
JVM translates bytecode into machine code for the specific platform
This allows Java code to run on any platform with a JVM installed
Example: A Java program compiled on Windows can run on Linux or Mac as
(2 Questions)
- Q1. Why should we hire you?
- Q2. Tell me about yourself.
Interview Preparation Tips
- Java
Skills evaluated in this interview
I applied via Company Website and was interviewed before Jul 2021. There were 3 interview rounds.
Aptitude, reasoning, English, cloud sections
2 questions in which , one has to complete within an 50 minutes
(2 Questions)
- Q1. Tell me about t Yourself
- Q2. What are the previous experiences
Interview Preparation Tips
- Java
- SQL
- Agile Methodology
- SDLC
Keep it just and short
Explain more about your experiences
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Numerical ability and logical reasoning followed by some coding mcqs
(1 Question)
- Q1. Print 1 to 100 without for loop
- Ans.
Printing 1 to 100 without for loop
Use recursion to print numbers from 1 to 99
Print 100 outside the recursion
Use a base case to stop recursion at 100
Interview Preparation Tips
I applied via Campus Placement and was interviewed before Jun 2021. There were 2 interview rounds.
Simple aptitude test
(1 Question)
- Q1. General questions as per your cv
Interview Preparation Tips
- Aptitude
I applied via Recruitment Consultant and was interviewed before Jul 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. DS Algo Questions on Trees. Leadership Principles
Interview Preparation Tips
I appeared for an interview before Sep 2020.
Round duration - 60 minutes
Round difficulty - Easy
Round duration - 50 minutes
Round difficulty - Easy
Round duration - 60 minutes
Round difficulty - Easy
At the beginning of this round, the interviewer asked me about the data structures I knew. Linked lists, trees, graphs, arrays etc. was my answer. He asked me how well I knew Dynamic Programming. I said I wasn’t strong in that and he said that he would ask me a question on dynamic programming for sure.
Round duration - 40 minutes
Round difficulty - Easy
The interviewer asked me if I was comfortable with the interview process so far and how the previous interviews were. I said it was good and he gave me the first problem to solve.
(1 Question)
Round duration - 60 minutes
Round difficulty - Easy
The interviewer asked me some Computer Science fundamentals in this round as well as some behavioural questions.
- Q1. Implement a Trie data structure and write functions to insert and search for a few words in it.
- Ans.
Implement a Trie data structure with insert and search functions.
Create a TrieNode class with children and isEndOfWord attributes.
Implement insert function to add words by iterating through characters.
Implement search function to check if a word exists by traversing the Trie.
Example: Insert 'apple', 'banana', 'orange' and search for 'apple' and 'grape'.
Interview Preparation Tips
Do lot of hard work and practice of Data Structures and Algorithms based questions. I personally recommend you Coding Ninjas and Geeks For Geeks for interview preparation.
Application resume tips for other job seekersMake your resume short and try to make it of one page only and do mention all your skills which you are confident of in your resume.
Final outcome of the interviewSelectedSkills evaluated in this interview
I applied via Campus Placement and was interviewed before Aug 2021. There were 2 interview rounds.
It was a basic aptitude test.
(1 Question)
- Q1. Interview was fine. Mostly asked about my final year project.
Interview Preparation Tips
Duplex Technology Interview FAQs
Tell us how to improve this page.
Interview Questions for Popular Designations
Duplex Technology Interview Process
based on 1 interview
Interview experience
Interview Questions from Similar Companies
|
Front end Developer
4
salaries
|  ₹1.8 L/yr - ₹2.2 L/yr |
TCS
Accenture
Wipro
Cognizant
- Home >
- Interviews >
- Duplex Technology Interview Questions
