Lumina Datamatics Team Lead Interview Questions and Answers

Aptitude test all mathematical and general aptitude questions

Any topic related to current trends

Q1. Totally technical round all the questions related to the position that you are applying for
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Q2. Different types of Models etc..
Ans. 
There are various types of models used in different fields such as statistical models, mathematical models, physical models, etc.
• Statistical models: Used in data analysis to make predictions or draw inferences.

• Mathematical models: Represented using mathematical equations to describe real-world phenomena.

• Physical models: Used to simulate physical systems or objects for testing or analysis.

• Computer models: Utilized in co...read more
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Q3. Explain Bug life cycle or defect life cycle
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Bug life cycle or defect life cycle is the process of identifying, reporting, prioritizing, fixing, and verifying bugs in software development.
• Bug identification: Bugs are identified through testing, user feedback, or code reviews.

• Bug reporting: Bugs are reported in a bug tracking system with details like steps to reproduce, severity, and priority.

• Bug prioritization: Bugs are prioritized based on severity and impact on...read more
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Q1. What are oops concept
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Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: allows a class to inherit properties and behavior from another class

• Polymorphism: ability for objects of different classes to respond to the same message

• Abstraction: hiding the complex implementation det
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Q1. About current project
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Q1. Why did we hired you
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Q2. What is next 5 years see your self
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Q1. Remove duplicates from the list
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Remove duplicates from an array of strings
• Create a new set to store unique values

• Iterate through the array and add each element to the set

• Convert the set back to an array to remove duplicates
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Q2. Inheritance related theoretical
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Q1. Java 8, stream api, spring boot
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Q1. Java 8 ,stream api , Microservice, spring boot ,
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Q1. Stream api program,duplicate character find in given string how many way you can solve this problem, puzzles 25 horses
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Q1. How to improve performance issue your application,How to find proformance problem in system, How to join us
Ans. 
To improve performance in an application, identify performance problems and join our team.
• Analyze application code and identify bottlenecks

• Use profiling tools to measure performance

• Optimize database queries and improve indexing

• Implement caching mechanisms

• Upgrade hardware or infrastructure if necessary

• Join our team to collaborate on performance improvements
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Q1. Describe a project that you did for e-commerce
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Q2. How will you rate yourself on js on a scale of 1-10?
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Basic aptitude test.

Q1. Basic sql db questions
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Q2. Project related questions
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Q1. Tell about yourself?
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