Dot Net Lead Interview Questions and Answers

Session uses a unique identifier to track which user is logged in

• Session assigns a unique identifier to each user upon login

• This identifier is stored in a cookie or in the URL

• When the user makes a request, the server checks the identifier to determine which user is logged in

An interface is a contract that defines a set of methods and properties that a class must implement.

• Interfaces provide a way to achieve abstraction and polymorphism in object-oriented programming.

• They allow for loose coupling between classes and promote code reusability.

• An example of an interface in C# is the IDisposable interface, which defines a method for releasing unmanaged resources.

• Another example is the IEnumerable interface, which defines methods for iterating over a ...read more

Microservice architecture involves breaking down a large application into smaller, independent services that communicate with each other.

• Each microservice is responsible for a specific function or feature of the application.

• Microservices communicate with each other through APIs.

• They can be developed, deployed, and scaled independently.

• Microservices allow for better fault isolation and improved scalability.

• Examples of companies using microservices include Netflix, Amazon, and ...read more

Filters and middleware in .NET Core serve similar purposes but have different implementations.

• Filters are used to run logic before and after an action method in MVC, while middleware is used to handle requests and responses in the pipeline.

• Filters are specific to MVC, while middleware can be used in any type of .NET Core application.

• Filters are applied at the controller or action level, while middleware is applied globally to the application.

• Filters are more tightly integrate...read more

HTTP module in IIS is a customizable component that can intercept and modify incoming and outgoing HTTP requests.

• HTTP modules are .NET classes that implement the IHttpModule interface.

• They can be used to perform tasks such as authentication, logging, compression, encryption, etc.

• HTTP modules are configured in the web.config file of an ASP.NET application.

• Example: A custom HTTP module can be created to log all incoming requests to a web application.

Web API allows for communication between different systems over the internet using standard protocols like HTTP.

• Enables communication between different systems over the internet

• Uses standard protocols like HTTP for communication

• Allows for easy integration with various platforms and devices

• Facilitates the development of RESTful services

• Provides flexibility and scalability for applications

SOID (Separation of Concerns, Open/Closed, Interface Segregation, Dependency Inversion) is a set of principles in C# for designing maintainable and scalable software.

• SOID helps in achieving modularity, flexibility, and extensibility in software design.

• Separation of Concerns (SoC) principle helps in dividing the software into smaller, independent modules.

• Open/Closed principle (OCP) states that software entities should be open for extension but closed for modification.

• Interface...read more