AVANTSOFT Senior Software Developer Interview Questions and Answers

Q1. Mutable and Non-Mutable data type.
Ans. 
Mutable data types can be changed after creation, while non-mutable data types cannot be changed.
• Mutable data types in Python include lists and dictionaries.

• Non-mutable data types in Python include tuples and strings.

• Changing a mutable data type will modify the original object, while changing a non-mutable data type will create a new object.
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Q2. Write code for decorator.
Ans. 
A decorator is a design pattern that allows behavior to be added to individual objects, either statically or dynamically, without affecting the behavior of other objects.
• Decorators are functions that take another function and extend its behavior without explicitly modifying it.

• They are commonly used in Python to add functionality to existing functions or classes.

• Example: Adding logging to a function using a decorator.
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Print pattern and recursive program

Q1. Technical question ask link c#,Api,mvc, Angular ,core.net
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Q1. Introduction and educational , work experience
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There were three coding questions.

Q1. Could you provide a thorough explanation of the project?
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Q2. OOps Concepts and question from the technical subjects
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Q3. Why Spring Boot
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Q4. JWT Authentication
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Q5. Docker and Kubernetes
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Q1. This round was purely based on DSA. One question of Leetcode hard difficulty was asked. Question Name - Median of two sorted arrays.
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Q1. This was low level design round. I was asked to design a system like Redbus. Functional Requirements - 1. user can login/signup on the platform 2. functionality to choose btw different operational routes....read more
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Q1. This round was taken by their Engineering Director. Questions were related to multithreading, types of entity relationships with examples, transaction management in Spring Boot, JVM components, garbage col...read more
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Q2. Later interviewer asked me to code a multithreading assignment - 1. Create a fixed threadpool of size 10. 2. Submit number of tasks to the threadpool. 3. Return the results from every task and print in mu...read more
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Q1. Project Architecture
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Q1. Informatica tech questions
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Q1. What is the difference between normal and arrow functions
Ans. 
Arrow functions are more concise and have a lexical 'this' binding compared to normal functions.
• Arrow functions do not have their own 'this' keyword, they inherit it from the parent scope.

• Arrow functions do not have their own 'arguments' object.

• Arrow functions cannot be used as constructors with 'new'.

• Arrow functions are more concise and have implicit return when no curly braces are used.
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Q2. All basic JS Questions to cover Hoisting closure
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Q3. They asked to show me an example using the API call
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Q4. Difference between forEach and Map
Ans. 
forEach is used to iterate over an array and perform a function on each element, while map creates a new array by applying a function to each element.
• forEach does not return a new array, while map does

• forEach does not modify the original array, while map creates a new array

• forEach is used for side effects, while map is used for transformation

• Example: forEach - array.forEach(item => console.log(item)), map - const newAr
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Q1. Describe your work in current project
Ans. 
I am currently working on developing a web application for a client in the e-commerce industry.
• Developing front-end using React.js and back-end using Node.js

• Implementing payment gateway integration for seamless transactions

• Optimizing website performance for better user experience
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Q1. Describe the current design of the project
Ans. 
The current design of the project is a microservices architecture with a front-end built using React and a back-end using Node.js.
• Microservices architecture is used for scalability and flexibility

• Front-end is developed using React for a dynamic user interface

• Back-end is built with Node.js for server-side logic
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Aptitude was very basic.

Q1. What is constant?
Ans. 
A constant is a value that does not change during the execution of a program.
• Constants are used to store values that remain the same throughout the program.

• They are declared using the 'const' keyword in many programming languages.

• Examples include mathematical constants like pi (3.14159) or physical constants like the speed of light (299,792,458 m/s).
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Q2. What is object oriented programming?
Ans. 
Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• Objects are instances of classes, which define the structure and behavior of the objects.

• Encapsulation, inheritance, and polymorphism are key principles of object oriented programming.

• Example: Inheritance allows a subclass to inherit attributes and methods from a superclass.
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Q1. Salary Negotiation
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Q2. Work culture description
Ans. 
Our work culture is collaborative, innovative, and focused on continuous learning and growth.
• Encourages teamwork and open communication

• Emphasizes creativity and problem-solving

• Provides opportunities for professional development

• Values diversity and inclusion

• Promotes a healthy work-life balance
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