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Iprogrammer Solutions Node JS Developer Interview Questions and Answers
Iprogrammer Solutions Node JS Developer Interview Experiences
1 interview found
Garv Gaurav
I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.
(2 Questions)
- Q1. What is interface
- Ans.
An interface in Node JS is a way to define a contract for objects to ensure they have certain properties or methods.
Interfaces in Node JS are used to enforce a specific structure on objects.
They are not implemented in the same way as in other languages like Java or TypeScript.
Interfaces are typically defined using JSDoc comments to describe the expected properties and methods of an object.
- Q2. What is middleware
- Ans.
Middleware is a function that has access to the request and response objects in Node.js, and can modify or terminate the request-response cycle.
Middleware functions can perform tasks like logging, authentication, error handling, etc.
They are executed sequentially in the order they are defined in the code.
Examples of middleware in Node.js include Express.js middleware like body-parser, morgan, and helmet.
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Anonymous
I applied via Naukri.com and was interviewed in Mar 2023. There were 2 interview rounds.
(5 Questions)
- Q1. What are oops concepts in java, explain real time scenario
- Ans.
OOPs concepts in Java include inheritance, polymorphism, encapsulation, and abstraction.
Inheritance allows a subclass to inherit properties and methods from a superclass.
Polymorphism allows objects to take on multiple forms and behave differently based on their context.
Encapsulation hides the implementation details of an object and only exposes necessary information.
Abstraction allows for the creation of abstract class...
- Q2. Uses of interface, inheritance
- Ans.
Interfaces define contracts for behavior, while inheritance allows for code reuse and polymorphism.
Interfaces allow for loose coupling and abstraction, enabling multiple implementations of the same behavior.
Inheritance allows for code reuse and extension of existing classes, reducing code duplication.
Polymorphism allows objects of different classes to be treated as if they were of the same class, simplifying code and i
- Q3. SQL query for join of tables
- Ans.
SQL query for joining tables
Use JOIN keyword to combine two or more tables based on a related column
Specify the columns to be selected using SELECT keyword
Use ON keyword to specify the condition for joining the tables
Different types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL OUTER JOIN
- Q4. Java concepts used in your project
- Ans.
Used Java concepts such as inheritance, polymorphism, and exception handling in my project.
Implemented inheritance to create a base class and derived classes with specific functionalities.
Utilized polymorphism to allow objects of different classes to be treated as if they were of the same class.
Implemented exception handling to handle errors and prevent program crashes.
Used interfaces to define a set of methods that a ...
- Q5. Overloading vs overriding, practical uses
- Ans.
Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
Overloading is used to provide different ways to call a method with different parameters
Overriding is used to provide a specific implementation of a method in a subclass
Overloading is resolved at compile-time while overriding is r...
Interview Preparation Tips
- Core Java
- OOPS
- collection framework
- Database Management
Skills evaluated in this interview
Raman kheti
Selected
I appeared for an interview in Jun 2023.
(1 Question)
- Q1. Docker Basics:What is Docker, and how does it differ from traditional virtualization?Explain the purpose of Docker images and containers.Node.js Fundamentals:Describe the event-driven architecture of Node....
Moningi Ashwini
Selected
I applied via Company Website and was interviewed in Jul 2023. There were 4 interview rounds.
I have given the coding test in python language. Out of 5 questions, we have to attain a minimum of 3 questions.
(1 Question)
- Q1. The questions in technical round is related to the task which were given to us and also they ask basics questions related to technical.
(1 Question)
- Q1. The interview was about the personality check, overeally it was good .
Interview Preparation Tips
Selected
I applied via LinkedIn and was interviewed in Apr 2023. There were 3 interview rounds.
Todo application javascript todo app creation needs to submit
(1 Question)
- Q1. Expected salary, family, future plans
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Amit kumar Mohanty
I applied via Referral and was interviewed in Jul 2023. There were 4 interview rounds.
String , Array ,Collection framework related questions.
Ecommerce site with Login,Review,AddToCart,Order features,Filter features.
(1 Question)
- Q1. Html,Css,Js. Interviewer don't have knowledge on Java,React js.And if you don't able to answer basic html,css related questions they will disqualify you.
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First round is online test of 3 virtual rounds consist of aptitude , and coding
(2 Questions)
- Q1. Matrix multiplication
- Q2. Singly linked list
- Ans.
A singly linked list is a data structure where each element points to the next element in the list.
Each node in the list contains data and a reference to the next node
Traversal starts from the head node and follows the next pointers until the end
Insertion and deletion can be done efficiently at the beginning or end of the list
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Skills evaluated in this interview
It is easy and you can clear it.
It was moderate and hard questions
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Selected
I applied via Naukri.com and was interviewed in May 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Linked list question to detect cycle
- Q2. Basic questions from JS
(2 Questions)
- Q1. Some questions related to my projects
- Q2. Some Questions related to my past experience
Ritika
I applied via Approached by Company and was interviewed in Jan 2024. There was 1 interview round.
(2 Questions)
- Q1. Map reduce filter in javascript
- Ans.
Map, reduce, and filter are higher-order functions in JavaScript used to manipulate arrays.
Map: Transforms each element in an array and returns a new array with the transformed elements.
Reduce: Reduces an array to a single value by applying a function to each element.
Filter: Creates a new array with elements that pass a certain condition.
- Q2. Exception handling
Skills evaluated in this interview
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