Bharti Airtel Senior Data Scientist Interview Questions and Answers

Average type questions.

Q1. About the domain/fields or have any experienced or what u did there
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Q1. Self introduction
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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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Will be two questions to solve

Q1. Details about ML,DL
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Q2. Detials about Projects
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This round was hackerath test which included 1 coding questions and 20 MCQ's related to java,spring,spring boot,Microservices etc

Q1. It was F2F in BT office RMZ eco world office
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Q2. A)Microservice Architecture and design b)Explain your project c)Target Sum in array d)Nth highest salary e)Java Fundamentals
Ans. 
The interview questions cover topics like Microservice Architecture, project explanation, array manipulation, Nth highest salary, and Java fundamentals.
• Microservice Architecture involves breaking down a large application into smaller, independent services that communicate with each other.

• Explain a project you worked on, highlighting the technologies used, challenges faced, and the outcome.

• Target Sum in array involves f...read more
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Q1. This was Techno-Managerial round
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Q2. A)Why are you looking for job change b)Why are you intrested in BT. c)How you approach the design part of a system
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Q1. It was an HR round
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Q2. First I waited for almost 10 days for BGV and than a link was provided for applying the job and than HR round for Salary negotiations
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Q1. Tell me something about you? Your experience overall of Work, why you left your last organisation? Why BT?
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MCQ questions for English maths and situations based questions

Q1. Basis on your experience the questions were asked What do you know about NPS, promoter detractor, how will manage your work life balance
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Q2. Why you want to join BT
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Q3. Where you see yourself in next 5 years and question on your stability
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Q4. Are you comfortable with rotating shifts
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Basic debugging questions

Q1. Basic Java conncepts
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Q2. Inheritance of files
Ans. 
Inheritance of files refers to the process of passing down files and their associated permissions from one user or group to another.
• Inheritance allows for efficient management of file permissions by reducing the need to manually assign permissions to each individual file.

• When a file inherits permissions, it means that it adopts the same permissions as its parent directory.

• Inheritance can be enabled or disabled for spec...read more
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Q3. Why do you want to join is
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Q1. Technical Interview + Coding
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Q1. Technical Interview
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