DMG MORI Software Developer Intern Interview Questions and Answers

1 hour duration. Sliding window problem. On hacker rank platform. Expected to write a working code and solve it optimally/scalable solution.

Q1. Again a coding test. LLD + hash map. 1 hour on hacker rank.
Add your answer

Q1. Impliment counter using closure in js
Ans. 
Implement a counter using closure in JavaScript.
• Create a function that returns another function which increments a counter variable.

• The counter variable should be defined in the outer function's scope and only accessible to the inner function.

• Each time the inner function is called, increment the counter variable and return its value.
Answered by AI
Add your answer
Q2. Explain promises, promise.all(), impliment binary search
Ans. 
Promises are objects representing the eventual completion or failure of an asynchronous operation. promise.all() is a method that takes an array of promises and returns a single promise that resolves when all of the promises have resolved.
• Promises are used in JavaScript to handle asynchronous operations.

• promise.all() takes an array of promises and returns a single promise that resolves when all promises in the array ha...read more
Answered by AI
Add your answer

Q1. Questions on kafka, cache invalidation, diff b/w authentication and authorization
Add your answer

2 dsa questions of easy/medium

Q1. Asked two dsa questions of leetcodeeasy/medium
Add your answer

Q1. Asked two dsa questions of leetcode easy/medium
Add your answer

Q1. Asked one dsa question on tree and discussion on resume and dbms os
Add your answer

Q1. Salary Discussion
Add your answer

Quantiative Aptitude

Q1. Questions related to basic DSA, Searching, sorting, SQL Queries based on aggregate functions, Basic puzzle (GFG)
Add your answer

Q1. Resume based, Discussion about projects mentioned on the resume.
Add your answer

Q1. Strength, Weakness,
Add your answer

Some database questions,some java questions .

Q1. What is the difference between javascript and jQuery.
Ans. 
JavaScript is a programming language used for web development, while jQuery is a library built with JavaScript to simplify HTML document traversal and manipulation.
• JavaScript is a programming language, while jQuery is a library written in JavaScript.

• JavaScript can be used for a wide range of tasks, while jQuery is mainly used for DOM manipulation and event handling.

• JavaScript is a core technology for web development, w...read more
Answered by AI
Add your answer
Q2. Define different types of join
Ans. 
Different types of joins are used in SQL to combine rows from two or more tables based on a related column between them.
• Inner Join: Returns rows when there is at least one match in both tables.

• Left Join (or Left Outer Join): Returns all rows from the left table and the matched rows from the right table.

• Right Join (or Right Outer Join): Returns all rows from the right table and the matched rows from the left table.

• Full ...read more
Answered by AI
Add your answer
Q3. Define multithreading concept and exception handling.
Ans. 
Multithreading allows multiple threads to run concurrently, while exception handling deals with errors in a program.
• Multithreading involves running multiple threads simultaneously to improve performance and responsiveness.

• Threads share the same memory space but have their own program counter and registers.

• Exception handling is a mechanism to handle errors or exceptional situations in a program.

• It helps prevent the prog...read more
Answered by AI
Add your answer

Q1. Design pattern experience
Ans. 
I have extensive experience with various design patterns such as Singleton, Factory, Observer, and MVC.
• Implemented Singleton pattern to ensure only one instance of a class exists

• Utilized Factory pattern to create objects without specifying the exact class

• Implemented Observer pattern for event handling and notifications

• Utilized MVC pattern for separating concerns in a software application
Answered by AI
Add your answer

Q1. Past Experience
Add your answer