Vodafone Idea Senior Software Engineer Interview Questions and Answers

30min duration C coding 10 questions asked

1hr duration interviewer will be giving some random C questions to code

Q1. System programming
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Q2. System design, os concepts
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Q1. Technical Interview + Coding
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Q1. Technical Interview
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The coding test was for 90 mins, and comprised of questions from topics such as DP and hashtables. It was taken on hackerrank platform

Q1. One question related to hashing (particularly about hashcode and equals method)
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Q2. A variation of number of connected islands from graph
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Q1. Thread synchronisation, print alternate numbers using 5 different threads
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Q2. C++ Related questions were asked, in which I was asked about how can I find the size of Object, difference between malloc and calloc. What are semaphores and how are they used
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Q1. It was completely on the project worked on using the spring boot. 1)how to handle if the applciation is restarting continuously 2)how to load multiple applccation property file in sequential way 3)how to h...read more
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Q1. Project related questions
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Coding Leetcode medium question

Q1. Design BookMyShow HLD and LLD
Ans. 
Design high-level and low-level architecture for BookMyShow
• HLD should include components like user interface, booking engine, payment gateway, etc.

• LLD should detail the classes, methods, and interactions within each component

• Use technologies like Java, Spring Boot, MySQL for backend and React for frontend

• Consider scalability, fault tolerance, and security in the design
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Q1. Salary, Role Expectations and Negotiations
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Q1. Longest Palindromic Substring
Ans. 
Find the longest palindromic substring in a given string.
• Use dynamic programming to check if substrings are palindromes.

• Start with single characters as potential palindromes and expand outwards.

• Keep track of the longest palindrome found so far.
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Q2. Find the Kth largest integer in the Array
Ans. 
Find the Kth largest integer in the Array
• Sort the array in descending order

• Return the element at index K-1
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Q1. Design youtube live streaming
Ans. 
Design a system for live streaming on YouTube platform.
• Use RTMP protocol for streaming live video to YouTube servers

• Implement a live chat feature for viewers to interact with the streamer

• Include options for viewers to like, share, and subscribe during the live stream

• Provide analytics for streamers to track viewership and engagement

• Ensure scalability to handle high traffic during popular live streams
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Q1. Basic PHP Questions on Arrays, implode, explode function difference, include, require difference.etc
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Q2. Basics MySQL questions, asked some queries
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Q1. Asked questions based on payment gateway.
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Q1. Salary discussion, explained roles and responsibilities
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Q1. What is arrow functions
Ans. 
Arrow functions are a concise way to write functions in JavaScript.
• Arrow functions are introduced in ES6.

• They have a shorter syntax compared to traditional function expressions.

• Arrow functions do not have their own 'this' keyword.

• They are best suited for non-method functions.

• Example: const add = (a, b) => a + b;
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Q1. Write code for parenthesis matching
Ans. 
Code to match parentheses in a string
• Use a stack to keep track of opening parentheses

• Iterate through the string and push opening parentheses onto the stack

• When a closing parenthesis is encountered, pop from the stack and check if it matches the closing parenthesis
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Q1. Tell me about Hls ja
Ans. 
HLS stands for HTTP Live Streaming, a protocol used for streaming media over the internet.
• HLS breaks the media content into small chunks and delivers them over HTTP.

• It is widely used for streaming video and audio content on the internet.

• HLS allows adaptive bitrate streaming, where the quality of the video adjusts based on the viewer's network speed.

• Popular streaming services like Netflix and Hulu use HLS for delivering
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