Loadshare Networks Data Engineer Interview Questions and Answers

Q1. Detailed questions on probability. Statistical questions.
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Q1. Basic interview questions with project related questions
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Q1. Detailed Questions on projects
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Q1. Normal HR interview questions with casual talks
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Q1. What is your name
Ans. 
My name is John Doe.
• My first name is John

• My last name is Doe
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Q2. Introducing ur self
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Q1. Why do you want work for us?
Ans. 
I am impressed by your company's innovative approach to data analysis and want to be a part of your team.
• I admire your company's reputation in the industry

• I am excited about the opportunity to work on cutting-edge projects

• I believe my skills and experience align well with the company's goals
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Q2. What are you strength
Ans. 
My strengths include strong analytical skills, attention to detail, and the ability to communicate complex data effectively.
• Strong analytical skills - able to interpret and analyze data effectively

• Attention to detail - meticulous in reviewing and ensuring accuracy of data

• Effective communication of complex data - able to present findings in a clear and understandable manner
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Involve working through a business problem or scenario with the interviewer to reach a logical conclusions

Q1. Introducing your self
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Q2. Tell me about your self
Ans. 
I am a data analyst with a strong background in statistics and data visualization.
• Experienced in using statistical tools such as R and Python

• Skilled in creating insightful data visualizations using Tableau

• Proficient in SQL for data querying and manipulation

• Strong analytical and problem-solving skills

• Excellent communication and presentation abilities
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Employers will set this type of test if they need to hire a person with excellent logical skills.

Code testing refers to running each line of code with a controlled input, and verifying if it performs the expected output

Q1. Introducing the same time
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Q2. Telling me about company
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Q1. Given a string, find the longest length palindromic substring in the given string.
Ans. 
Find the longest palindromic substring in a given string.
• Use dynamic programming to solve the problem efficiently.

• Start with the base cases of single characters and two characters.

• For longer substrings, check if the first and last characters match and if the substring between them is also a palindrome.

• Keep track of the longest palindrome seen so far.

• Time complexity: O(n^2), space complexity: O(n^2).
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Q1. Mention the most challenging technical problem you had to solve.
Ans. 
Developing a real-time data processing system for a high-traffic website.
• Designing a scalable architecture to handle the high volume of incoming data.

• Optimizing the data processing algorithms to minimize latency.

• Ensuring data consistency and accuracy in a distributed system.

• Implementing fault-tolerant mechanisms to handle system failures.

• Testing and debugging the system under various load conditions.
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Q2. Some minor low level entity design.
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Q1. Profile screening
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Q2. Previous employment details
Ans. 
I have worked as a Data Analyst for two years at XYZ Company.
• Worked as a Data Analyst at XYZ Company for two years

• Analyzed large datasets to identify trends and patterns

• Created reports and visualizations to present data findings

• Collaborated with cross-functional teams to gather and analyze data

• Used SQL, Python, and Excel for data analysis tasks
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Q1. Technical questions on tech stack. Mostly statistics and basic ML
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Q2. Previous project details
Ans. 
Developed a predictive model to forecast customer churn in a telecommunications company.
• Used machine learning algorithms such as logistic regression and random forest.

• Analyzed customer data including demographics, usage patterns, and customer service interactions.

• Achieved an accuracy of 85% in predicting customer churn.

• Provided actionable insights to the company to reduce churn rate and improve customer retention.
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Need to frame questions and their answers on data provided

Q1. Final salary discussion
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Given 3 strings S, S1, S2 containgin M, N and k characters respectively, task is to modify string by replaicing all substring S1 with S2 and S