Videojet Technologies Software Engineer Interview Questions and Answers

Q1. OOPS concepts with DSA in java
Ans. 
OOPS concepts in Java are principles like Inheritance, Encapsulation, Polymorphism, and Abstraction. DSA involves data structures and algorithms.
• OOPS concepts in Java include Inheritance, where a class inherits properties and behaviors from another class.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent cla...read more
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Q2. Questions related to resume projects and tech stacks used.
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Q1. Questions related to previous experiences in team oriented internships
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Q1. What's desing patterns
Ans. 
Design patterns are reusable solutions to common problems encountered in software design.
• Design patterns help in creating flexible, maintainable, and scalable software.

• Examples include Singleton, Factory, Observer, and Strategy patterns.

• Design patterns can be categorized into creational, structural, and behavioral patterns.
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Q2. What's object oriented programming
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Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.
• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Examples of OOP languages include Java, C++, and Python
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Q1. Why to join WD?
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WD offers exciting opportunities for growth and innovation in the software engineering field.
• Opportunity to work on cutting-edge technologies

• Collaborative and supportive work environment

• Career development and growth opportunities

• Strong company culture and values

• Global presence and diverse projects
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Q2. Detect loop in linked list
Ans. 
Use Floyd's Tortoise and Hare algorithm to detect loop in linked list.
• Initialize two pointers, slow and fast, at the head of the linked list.

• Move slow pointer by one step and fast pointer by two steps.

• If they meet at any point, there is a loop in the linked list.
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Q3. What are different product of WD?
Ans. 
WD offers a variety of products including external hard drives, internal hard drives, SSDs, and network attached storage devices.
• External hard drives

• Internal hard drives

• SSDs

• Network attached storage devices
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Q4. Do you want to ask any questions?
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There was a coding round on techgig which i cleared

Q1. I was invited to the technical round which was also online
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Q2. I could not attend the online technical round
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Q3. 2 questions on dsa
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Two Sum and 3 Sum in Leetcode

Q1. System design for a load balancer
Ans. 
A load balancer distributes incoming network traffic across multiple servers to ensure optimal resource utilization and prevent overload.
• Identify the requirements for the load balancer (e.g. traffic volume, server capacity)

• Choose a load balancing algorithm (e.g. round-robin, least connections)

• Implement health checks to monitor server status and remove unhealthy servers from rotation

• Consider scalability and redundancy f...read more
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Easy to attempt and creak the test

Q1. About yourself, c basic questions, about your project
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Q1. About yourself, about company, about location
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Q1. Background History
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Q2. Talk about your side projects and github repo
Ans. 
I have worked on various side projects including a personal website and a mobile app for tracking fitness goals.
• Developed a personal website using HTML, CSS, and JavaScript to showcase my projects and skills.

• Created a mobile app using React Native to track fitness goals and provide workout routines.

• Contributed to open-source projects on GitHub to improve my coding skills and collaborate with other developers.
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Basic QR Questions that includes logics, and puzzles

Hackerrank questions, 2 easy , 2 medium

It was open coding contest called Ode 2 Code organised on hackerearth. Top 100 students got interview calls

Q1. This was a 1:1 online technical interview.
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Q2. Basic question on web development, regarding projects in resume. 1 problem solving question and DSA basics
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Q3. I was asked to explain merge sort
Ans. 
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts each half, and then merges the sorted halves.
• Divide the array into two halves

• Recursively sort each half

• Merge the sorted halves back together
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