Airtel Payments Bank Data Engineer Interview Questions and Answers for Freshers

Q1. I was interviewed for 2yr experience. Normal Core java and basic sql question.
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Q2. Oops concept. Collections. Abstract class and interface. Sql procedures and functions Sql basic query
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Q1. Questions related to the projects worked till date. Explain your project. And counter question on your project.
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Q2. How many projects have you worked on? Explain each in short.
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Q1. Core Java Questions, sql Difference between ArrayList and Array find the 3 highest salary. Find the minimum element from the sorted array
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Q1. 1.About collections 2. Database
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Q1. They just asked basic questions on jave
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Q2. And basic database questions
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Q1. Basic java and database questions
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Basic level 10th question for freshers

DS algorithm, Question from Core Java and SQL

Q1. System Architecture for higher Experience
Ans. 
System architecture for higher experience involves scalable and efficient design.
• Focus on scalability to handle increasing user load

• Use microservices architecture for flexibility and easy maintenance

• Implement caching mechanisms for faster response times

• Utilize load balancing to distribute traffic evenly across servers
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Q1. Basic HR Question, why dou want work here
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Q1. Array string basic Java questions
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Q1. Normal intro and all question
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Round duration - 30 Minutes
Round difficulty - Medium

It is the technical interview round. I was provided the slot of 11:40 AM - 12:20 PM. It is scheduled on the hirepro platform. The interview platform is already integrated with a coding editor. The interviewer joined at 11:50 AM. They asked me a lot of questions regarding OOPS, SQL and also give me coding questions along with test cases to build and run at that time.

Q1. Connecting Ropes
Ninja visited his village after a long time. His village is having a river in its center with ‘N’ houses on the northern bank with distinct X-coordinates ‘A[1]’ , A[2]’ , … , ‘A[N]’ and ‘N...read more
Ans. Sub-Optimal Approach
 
Approach : 
 
• We first notice that the pairs (‘n1’,’s1’) and (‘n2’,’s2’) will cross each other if either :
• ‘n1’ < ‘n2’ and ‘s1’ > ‘s2’
• ‘n1’ > ‘n2’ and ‘s1’ < ‘s2’
• To reduce the cases, we just sort the pairs by their north coordinates.
• So, we only need to take care that there is no pair (‘n1’, ‘n2’) and (‘s1’,’s2’ ) such that ‘s1’ > ‘s2’.
• So, we need to select the subsequence ...read more
Answered by CodingNinjas
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