20+ Niveus Solution Interview Questions and Answers

I am comfortable with multiple computer languages.

• Java

• Python

• C++

• JavaScript

C++ is a compiled language while Java is an interpreted language.

• C++ is faster and more efficient than Java.

• Java is platform-independent while C++ is platform-dependent.

• C++ supports multiple inheritance while Java does not.

• Java has automatic garbage collection while C++ does not.

• C++ allows for low-level memory manipulation while Java does not.

Social websites like Twitter and Reddit can help improve verbal abilities through discussions and debates.

• Twitter allows users to engage in conversations and debates with people from all over the world.

• Reddit has various subreddits dedicated to discussions on different topics, which can help improve vocabulary and communication skills.

• Quora is another platform where users can ask and answer questions, which can help improve critical thinking and verbal abilities.

The OSI model has 7 layers that define how data is transmitted over a network.

• The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with the layers above and below it.

• The Physical layer deals with the physical transmission of data, while the Application layer deals with user interfaces.

• Examples of protocols that operate at different layers include Ethernet at the Data Link layer and ...read more

String is immutable, String Buffer is mutable. OOPs concept focuses on objects and classes. Exception handling is used to handle runtime errors.

• String is immutable, meaning its value cannot be changed once it is created. String Buffer is mutable, allowing for modifications to the value.

• OOPs concept revolves around the idea of objects and classes, where objects are instances of classes and encapsulate data and behavior.

• Exception handling is used to handle runtime errors and pr...read more

Understanding SQL joins and types with code examples

• Types of SQL joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both 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

• FULL JOIN returns rows when there is a match in one of the tables

• Example: SELECT * FROM table1 INNER JOIN...read more

OOPS concepts are fundamental to software development. They include inheritance, encapsulation, abstraction, and polymorphism.

• Inheritance allows a class to inherit properties and methods from another class.

• Encapsulation is the practice of hiding data and methods within a class, so they cannot be accessed from outside the class.

• Abstraction is the process of simplifying complex systems by breaking them down into smaller, more manageable parts.

• Polymorphism allows objects to take...read more