R1 Group DT Engineer Interview Questions and Answers

Q1. Can you provide a detailed explanation of object-oriented programming concepts?
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Q1. What is difference between function and stored procedure
Ans. 
Functions return a single value, while stored procedures can perform multiple operations and return multiple values.
• Functions return a single value, while stored procedures can return multiple values.

• Functions are called in SQL statements, while stored procedures are called using EXECUTE statement.

• Functions cannot have output parameters, while stored procedures can have output parameters.

• Functions cannot modify server ...read more
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Q2. How to implement custom exception in MVC
Ans. 
Custom exceptions can be implemented in MVC by creating a new class that inherits from Exception class.
• Create a new class that inherits from Exception class

• Override the constructor to pass a custom message to the base Exception class

• Throw the custom exception in the MVC controller or service layer
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Q1. What fifo? diff btwn fifo and lifo
Ans. 
FIFO stands for First In, First Out. LIFO stands for Last In, First Out.
• FIFO is a method for organizing and manipulating a data buffer, where the first element added is the first to be removed.

• LIFO is a method where the last element added is the first to be removed.

• FIFO is like a queue, while LIFO is like a stack.

• Example: In a FIFO queue, if elements A, B, and C are added in that order, they will be removed in the same...read more
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First round was on Hacker Earth

Q1. Technical round was on Spring Data Jpa, Pagination, SOLID principles
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Q1. Basics of sql and some coding questions
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Q2. Data structures
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Q1. Putin arrays strings
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1 coding question, and basic MCQ

Maths, Blood relations

Q1. Coding test on sql and logical programming
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Q1. Coding on sql and tsql
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Q1. Manager round, general discussion
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Q1. Company benefits and Salary discussion
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