MothersonSumi INfotech & Designs Junior Developer Trainee Interview Questions, Process, and Tips

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Abstract class can have constructors, fields, and methods, while interface cannot have any implementation.

• A class can only extend one abstract class, but can implement multiple interfaces.

• Abstract classes are used to define common characteristics among subclasses, while interfaces are used to define a contract...read more

Middleware is software that acts as a bridge between different applications or components, allowing them to communicate and share data.

• Middleware helps in managing communication between different systems or components.

• It can provide services such as authentication, logging, and caching.

• Examples of middleware include web servers like Apache or Nginx, and frameworks like Express.js in Node.js.

A sealed class is a class that cannot be inherited and an extension method is a method that allows adding new methods to existing types without modifying the original type.

• Sealed class restricts inheritance, preventing other classes from deriving from it.

• Extension methods allow adding new methods to existing types without modifying the original type.

• Example of sealed class: 'sealed class MyClass { }'

• Example of extensio...read more

Session is specific to a user's interaction with a website, while application is global to all users.

• Session stores user-specific data, while application stores data accessible to all users.

• Session is temporary and expires after a period of inactivity, while application data persists.

• Session is used for user authentication and personalization, while application data is used for global settings and configurations.

A delegate is a type that represents references to methods with a specific parameter list and return type.

• Delegates are similar to function pointers in C++ or pointers to member functions in C++/CLI.

• Delegates allow methods to be passed as parameters.

• Delegates can be used to define callback methods.

• Delegates can invoke the methods they reference.

• Delegates are type-safe and secure.