Videojet Technologies Software Engineer Interview Questions and Answers

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
Ans. 
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?
Ans. 
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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