Webtel Electrosoft Senior Software Developer Interview Questions and Answers

Multithreading is the concurrent execution of multiple threads to achieve parallelism and improve performance.

• Multithreading allows multiple threads to run concurrently within a single process.

• It enables parallel execution of tasks, improving performance and responsiveness.

• Background worker is a component that simplifies multithreading by providing a dedicated thread for executing time-consuming tasks in the background...read more

To create a file and append text, use file handling functions in the programming language.

• Open the file in append mode

• Write the text to the file

• Close the file

A namespace is a container that holds a set of identifiers to avoid naming conflicts.

• Namespaces are used to organize code and avoid naming collisions.

• They can be nested within other namespaces.

• They are declared using the 'namespace' keyword.

• They can be used to group related classes, functions, and variables.

• For example, the 'std' namespace in C++ contains standard library functions and objects.

Abstract classes are classes that cannot be instantiated and can have both abstract and non-abstract methods. Interfaces are contracts that define the methods that a class must implement.

• Abstract classes can have constructors and instance variables, while interfaces cannot.

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

• Abstract classes are used when there is a need for a common ...read more

Static is a keyword in programming that denotes a variable or method that belongs to the class rather than an instance of the class.

• Static variables and methods can be accessed without creating an instance of the class.

• Static variables are shared among all instances of the class.

• Static methods cannot access non-static variables or methods.

• Examples of static methods include Math.max() and Arrays.sort().

C# supports various types of classes including abstract, sealed, static, and partial classes.

• Abstract classes cannot be instantiated and are used as base classes for other classes.

• Sealed classes cannot be inherited and are used to prevent further modification.

• Static classes cannot be instantiated and contain only static members.

• Partial classes allow a class to be defined in multiple files.

• Other types of classes include...read more