Dev Technosys Mern Full Stack Developer Interview Questions and Answers

Easy to medium level questions were asked

Questions were given asked to explain the concept

Q1. Basics of c++,java,oops
Add your answer

DSA MCQ in online platform

Basic closings like lists/array/string

Online MCQs - 15 Questions (Aps, DSA, Output Prediction)

1 Question (with 3 Enhancement)

Q1. Delete Middle Element from a stack of Odd Length
Ans. 
Remove middle element from a stack with odd length
• Find the middle index of the stack by dividing the length by 2

• Remove the element at the middle index

• Adjust the stack by shifting elements if necessary
Answered by AI
Add your answer
Q2. Resume Based Questions
Add your answer

Q1. Self Introduction but without the details in the resume
Add your answer
Q2. Asked whether ok with the bond
Add your answer

Data structure and aptitude

10 mins given for prepare for the problem and after completing the problem (program ) they asked to explain and asked to upgrade the program by reduce time complexity

Q1. Topic given and want to explain
Add your answer
Q2. Reverse string without buildin funtion and for loop
Ans. 
Reverse a string without using built-in functions or for loops
• Use recursion to reverse the string

• Pass the substring excluding the first character to the recursive function

• Base case: return the character itself if the length of the string is 1

• Concatenate the last character of the string with the result of the recursive call
Answered by AI
Add your answer

Q1. Introduce your self
Ans. 
I am a passionate software developer with experience in Java, Python, and web development.
• Experienced in Java and Python programming languages

• Skilled in web development technologies like HTML, CSS, and JavaScript

• Worked on projects involving database management with SQL
Answered by AI
Add your answer
Q2. Are you ok with agreement
Ans. 
Yes, I am okay with agreement.
• I am comfortable with signing agreements related to software development projects.

• I understand the importance of agreements in protecting both parties involved in a project.

• I am willing to review and negotiate agreements to ensure they are fair and reasonable.
Answered by AI
Add your answer

Six coding questions to be solved within an hour. The coding questions were standard aptitude based and did not include any complex topics like Dynamic Programming or trees in my case.

Q1. I had to solve a problem. Given an expression involving operators and operands with parentheses, convert it to postfix expression. I used the stack data structure.
Add your answer

Q1. A puzzle question
Add your answer

Online coding test having basic problems and some aptitude problem.

Q1. Interviewer will ask opps and 2 basic coding problem 2 aptitude problem if you mention any technology in resume then ask about technology and projects
Add your answer
Q2. What is opps ?
Ans. 
OOPs stands for Object-Oriented Programming, a programming paradigm based on the concept of objects.
• OOPs focuses on creating objects that contain both data and methods to manipulate that data.

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPs.

• Examples of OOPs languages include Java, C++, and Python.
Answered by AI
Add your answer
Q3. What is singleton class ?
Ans. 
A singleton class is a class that can only have one instance created and provides a global point of access to that instance.
• Singleton classes are often used for logging, caching, database connections, and thread pools.

• They typically have a private constructor to prevent instantiation from other classes.

• They provide a static method to access the single instance, which is created if it doesn't exist yet.
Answered by AI
Add your answer

It has include logical ,reasoning question. Aptitude questions are include mcq type question.

Firstly introduce yourself then HR take the one subject then selected candidate discuss on that subject. Subject related talking positive and negative point. Then who candidate speak better these are select in next round.

Nuts and bolts game, to output date in a certain format, one SQL query

Q1. Stacks and Queues
Add your answer
Q2. Linked lists, arrays, and many more basic fundamental Dsa questions.
Add your answer

Q1. More about your resume projects.
Add your answer
Q2. Puzzles and reasoning is asked
Add your answer