Discovery Inc Java Developer Interview Questions and Answers

Medium to hard level problem questions and basic subjects fundamentals mcqs

Q1. Basic OS questions
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Q2. Basic CN questions
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Q1. Define your current project
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Q2. Coding problem on DP
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Q1. What is the use of ref?
Ans. 
The 'ref' keyword in C# is used to pass arguments by reference instead of by value.
• Allows a method to modify the value of the argument passed to it

• Useful when you want to update the original value of a variable inside a method

• Can be used with value types and reference types

• Example: void UpdateValue(ref int num) { num = 10; }

• Example: int value = 5; UpdateValue(ref value); // value will be 10 after the method call
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Q2. What are React Hooks
Ans. 
React Hooks are functions that let you use state and other React features without writing a class.
• React Hooks were introduced in React 16.8.

• They allow you to use state and other React features in functional components.

• Some commonly used React Hooks are useState, useEffect, useContext, etc.

• Hooks are more lightweight and easier to understand compared to class components.
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Some basic level of dsa questions like sorting and reverse a linked list and some javascript question

Q1. It was totally based on your project and resume
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2 Questions - 1 graph and one basic

Q1. 2 basic coding questions and questions on OS and DBMS
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I don't really really for aptitude

Q1. Oops, dsa, sdlc
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Q2. Project, dbms, pattern printing
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Q3. What is inheritance and implementation
Ans. 
Inheritance is a mechanism in object-oriented programming where a class inherits properties and behaviors from another class. Implementation is the process of defining the methods and behaviors of a class.
• Inheritance allows a class to inherit attributes and methods from another class, promoting code reusability.

• Implementation involves writing the actual code for the methods and behaviors defined in a class.

• Example: Cla...read more
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Q1. Self introduction
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Q2. Your strength, weeknesss, where do you in next 5 years
Ans. 
My strength is problem-solving, weakness is time management, and in the next 5 years, I aim to become a lead developer.
• Strength: Strong problem-solving skills - I enjoy tackling complex issues and finding efficient solutions.

• Weakness: Time management - I sometimes struggle with prioritizing tasks and meeting deadlines.

• Future goal: To become a lead developer - I plan to enhance my technical skills, take on more responsi
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