Celebal Technologies Java Developer Interview Questions and Answers

Duration 1 hr around 60 questions

Q1. The Question was based on applying statistical knowledge by providing a real life scenario of sampling and how to best choose the sample size without making it computationally expensive
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Q2. The Question was about the domain knowledge and what are the real hurdles we face in live project while trying to pitch aftersales to a new stakeholder
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It happened in Mettel platfrom, where there were 3 sections like any normal test but mostly focused on the role we are applying for

Q1. The question was based on the case study , where the team wants to explore the opportunity to expand the market share of drug
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Q2. Advanced SQL functions(Data Extractions), and Data manipulations on live DB
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Q1. Java, sql ,springboot
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Q1. Basic Understanding ML , SQL Python and case study related questions
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Q1. Basic sql python and ML Question
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Q1. How to deal with problems that come daily along the way
Ans. 
To deal with daily problems, it is important to stay calm, prioritize tasks, seek help when needed, and learn from each experience.
• Stay calm and composed to think clearly and make rational decisions

• Prioritize tasks based on urgency and importance

• Seek help from colleagues or supervisors when facing complex problems

• Learn from each experience to prevent similar problems in the future
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Q1. What are the type of joins
Ans. 
Types of joins include inner join, outer join, left join, and right join.
• Inner join: returns rows when there is a match in both tables

• Outer join: returns all rows when there is a match in one of the tables

• Left join: returns all rows from the left table and the matched rows from the right table

• Right join: returns all rows from the right table and the matched rows from the left table
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