Qbent Technologies Interview Questions and Answers

Inheritance is a mechanism in OOP where a new class is derived from an existing class.

• It allows the new class to inherit the properties and methods of the existing class.

• C# supports single inheritance, where a class can inherit from only one base class.

• However, C# supports multiple interface inheritance, where a class can implement multiple interfaces.

Overloading is when a class has multiple methods with the same name but different parameters. Overriding is when a subclass provides its own implementation of a method from its superclass.

• Overloading is used to provide different ways to call a method with different parameters.

• Overriding is used to change the behavior of a method in a subclass.

• Overloading is resolved at compile-time while overriding is resolved at runtime.

• Example of overloading: public void print(int num) and ...read more

Abstraction focuses on hiding unnecessary details while encapsulation focuses on protecting data.

• Abstraction is about showing only the necessary details to the user while hiding the implementation details.

• Encapsulation is about wrapping data and methods together to protect data from outside interference.

• Abstraction is achieved through abstract classes and interfaces while encapsulation is achieved through access modifiers like private, public, and protected.

• Example of abstrac...read more

Questions related to programming concepts such as overloading, overriding, arrays, exception handling, threads, virtual keywords, and inheritance types.

• Overloading is when a class has multiple methods with the same name but different parameters.

• Overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.

• An array is a collection of elements of the same data type.

• Types of arrays include one-dimensional, two-dimension...read more

ERP (Enterprise Resource Planning) is a software system that integrates various business functions into one unified platform.

• ERP systems help streamline processes and improve efficiency in areas such as inventory management, production planning, and financial reporting.

• They provide real-time data and analytics to help make informed business decisions.

• Examples of popular ERP systems include SAP, Oracle, and Microsoft Dynamics.

Relay is an electrical switch that opens and closes circuits electronically.

• Relays are used to control high voltage circuits with low voltage signals.

• They are commonly used in automotive, industrial, and home automation applications.

• Relays can be electromechanical or solid-state.

• They work by using an electromagnetic coil to open or close a switch.

• Relays are important components in electrical systems as they provide isolation and protection.