.NET Core Interview Questions: Complete Guide with Real World Examples
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09 Jan, 2025
ASP.NET Interview Questions
The Global.asax file (also known as the Application file) in ASP.NET is a special file used to handle global application-level events and configuration for an ASP.NET web application. It provides a way to define and manage events related to the lifecycle of the application, the session, and HTTP requests.
09 Jan, 2025
ASP.NET Interview Questions and Answers (2025)
Caching in ASP.NET is a technique used to store frequently accessed data temporarily, so it can be quickly retrieved without needing to recalculate or re-fetch it from a slower data source (such as a database or an external service). This improves performance, reduces the load on the server, and enhances the overall user experience by speeding up response times.
09 Jan, 2025
ASP.NET Interview Questions（2025）
**IActionResult** is an interface in ASP.NET MVC (and also in ASP.NET Core MVC) that represents the result of an action method. In MVC (Model-View-Controller) applications, an action method in a controller returns an instance of IActionResult, which is used to define the response that will be sent back to the client (typically a web browser).
09 Jan, 2025
ASP.NET MVC Interview Questions
Dependency Injection (DI) in ASP.NET Core is a design pattern used to manage the dependencies of classes. It allows the developer to inject the dependencies that a class needs, rather than having the class create the dependencies itself. This helps in making the code more modular, testable, and maintainable.
09 Jan, 2025
ASP.NET Interview Questions and Answers
In ASP.NET, ViewState and HiddenField are two mechanisms used to preserve state across postbacks (when a page is reloaded or submitted to the server), but they serve different purposes and function in distinct ways. Here's a detailed explanation of both:
09 Jan, 2025
ASP.NET Interview Questions and Answers for 2025
In ASP.NET, ViewState and HiddenField are two mechanisms used to preserve state across postbacks (when a page is reloaded or submitted to the server), but they serve different purposes and function in distinct ways. Here's a detailed explanation of both:
09 Jan, 2025
ASP.NET Developer Interview Questions
An HttpHandler in ASP.NET is a custom handler that implements the IHttpHandler interface to process incoming HTTP requests for specific file types or request patterns. It is a component that intercepts requests to the server and provides a way to handle them by writing custom code. The HttpHandler works at the request-processing level and is commonly used for tasks such as rendering dynamic content, managing custom file types, or handling special HTTP requests.
09 Jan, 2025
NET Core Interview Questions
A Web API (Application Programming Interface) in .NET is a framework that allows developers to build HTTP-based services to provide functionality over the internet. Web APIs allow different applications, including web and mobile apps, to interact with each other by exposing endpoints that can be accessed over HTTP.
09 Jan, 2025
NET Interview Questions for 2025
LINQ (Language Integrated Query) is a feature in .NET that allows developers to write SQL-like queries directly in C# (or other .NET languages) to query collections of data such as arrays, lists, or databases. It provides a unified way of querying data from different sources, such as in-memory collections, XML, relational databases, or other data stores, without having to write raw SQL or use other external querying tools.
09 Jan, 2025
NET Interview Questions for Job Success in 2025
In the .NET Framework, the Just-In-Time (JIT) compiler plays a crucial role in converting Intermediate Language (IL) code (produced by the compiler) into native machine code that the processor can execute. The JIT compiler runs during the application's execution, allowing for platform-specific optimizations. The main types of JIT compilers in .NET are:
09 Jan, 2025
NET Interview Questions and Answers for 2025
Dependency Injection (DI) in .NET is a design pattern that allows you to manage dependencies between objects in a way that promotes loose coupling and easier testing. It enables you to inject the dependencies of a class (like services or components) rather than having the class create them itself. In .NET, DI is typically used to provide services such as logging, data access, or configuration management, without the class needing to know the details of how these services are implemented.
09 Jan, 2025
NET Interview Questions (2025)
The Common Language Runtime (CLR) is the virtual machine component of the .NET Framework responsible for managing the execution of .NET applications. It is the runtime environment that handles the execution of code written in different programming languages, ensuring that the .NET platform is language-agnostic. CLR is a key part of the .NET ecosystem and provides several important functions related to the execution of code.
09 Jan, 2025
Top .NET Interview Questions (2025)
The .NET Framework is a software development platform developed by Microsoft that provides a large class library and supports several programming languages, including C#, VB.NET, and F#. It is used for building and running applications on Windows, including web applications, desktop applications, and services.
09 Jan, 2025
Top .NET Interview Questions for Job Success in 2025
The ASP.NET Page Life Cycle is the series of steps that an ASP.NET page goes through during its existence. When a page is requested by a user, ASP.NET runs through these steps to process the request, execute server-side code, render the HTML, and send the response back to the browser. Understanding the page life cycle is crucial for developers because it allows them to hook into specific events at the right time to customize behavior.
09 Jan, 2025
Top ASP.NET Interview Questions
ASP.NET is a free, open-source web framework developed by Microsoft for building modern web applications, websites, and APIs. It is part of the .NET ecosystem and is used to create dynamic, high-performance web applications with support for multiple programming languages such as C# and Visual Basic.
09 Jan, 2025
Top ASP.NET Interview Questions（2025）
Entity Framework (EF) is an Object-Relational Mapping (ORM) framework provided by Microsoft that allows developers to interact with databases using .NET objects. It simplifies data access by enabling you to work with databases in a more object-oriented way, reducing the need for writing raw SQL queries or handling low-level database operations manually. EF is used primarily in ASP.NET applications to interact with relational databases such as SQL Server.
09 Jan, 2025
Top NET Core Interview Questions for 2025
ADO.NET (ActiveX Data Objects .NET) is a set of classes in the .NET Framework that provides a comprehensive and efficient way to interact with data from different sources, such as databases, XML files, and other data services. It is the primary data access technology for interacting with relational databases in .NET applications.
09 Jan, 2025
Top NET Core Interview Questions
Synchronous and asynchronous programming are two distinct approaches for handling operations in .NET, especially when dealing with tasks that involve waiting for a resource or an operation to complete, such as file I/O, database queries, or network requests.
04 Jan, 2025
Most Frequently asked Interview Questions of asp.net-core
Routing in ASP.NET Core is a mechanism that determines how incoming HTTP requests are matched to specific code (typically controllers and actions). It is a key part of the ASP.NET Core MVC (Model-View-Controller) framework, but also used in Razor Pages and API applications. Routing enables the framework to map URL patterns to specific application logic based on the route template and HTTP method.
04 Jan, 2025
Most Frequently asked Interview Questions of asp.net-core(2024)
ASP.NET Core is a modern, open-source, cross-platform framework for building web applications, APIs, and microservices. It is a complete rewrite of the older ASP.NET Framework, designed to overcome the limitations of the original framework while offering greater performance, flexibility, and portability.
04 Jan, 2025
Most Frequently asked Interview Questions of linq
The GroupBy clause in LINQ is used to group elements in a sequence based on a specified key or criteria. It creates a collection of groups, where each group contains elements that share the same key. This is similar to the GROUP BY clause in SQL.
04 Jan, 2025
Most Frequently asked Interview Questions of linq(2024)
LINQ can work with null values in collections and objects, but it's important to understand how it handles null in different scenarios. Whether you’re working with null values in the collection itself or as properties of the objects within the collection, LINQ provides mechanisms to deal with these cases. Here's a breakdown of how LINQ handles null values:
04 Jan, 2025
Most Frequently asked asp.net-core Interview Questions and Answers
In an ASP.NET Core application, the Startup class is central to configuring and initializing the application. It provides two key methods, ConfigureServices and Configure, each with distinct roles in setting up the application's services and request processing pipeline.
04 Jan, 2025
Most Frequently asked asp.net-core Interview Questions (2024)
In ASP.NET Core, managing application settings involves configuring, storing, and accessing different types of settings that the application requires, such as connection strings, API keys, or feature toggles. ASP.NET Core provides a flexible configuration system that allows developers to manage these settings from multiple sources, and it integrates easily with Dependency Injection (DI) to ensure settings can be injected into components of the application.
04 Jan, 2025
Most Frequently asked asp.net-core Interview Questions
Cross-Origin Resource Sharing (CORS) is a mechanism that allows resources (like APIs) to be requested from a domain different than the one the resource is hosted on. In ASP.NET Core, you can enable and configure CORS to control which domains can access your API and the allowed HTTP methods.
04 Jan, 2025
Most Frequently asked linq Interview Questions (2024)
In LINQ, you can filter data using the Where method. The Where method allows you to specify a condition that the elements in a collection must meet to be included in the result. The filter is applied lazily, meaning the data is filtered when the query is executed (not when it is defined).
04 Jan, 2025
Most Frequently asked linq Interview Questions and Answers
LINQ (Language Integrated Query) provides several advantages over traditional SQL queries, especially in the context of working within a .NET environment. While SQL is powerful and optimized for querying relational databases, LINQ offers unique benefits that integrate more seamlessly with modern programming workflows. Below are the key advantages of using LINQ over traditional SQL queries:
04 Jan, 2025
Most Frequently asked linq Interview Questions
LINQ (Language Integrated Query) is a powerful feature in C# that allows developers to query and manipulate data directly within the C# language using a SQL-like syntax. It simplifies data access and manipulation by allowing queries to be written in C# code, making data querying more intuitive and integrated into the programming language.
03 Jan, 2025
Most Frequently asked Interview Questions of entity-framework(2024)
Database migrations in Entity Framework (EF) are a way of managing changes to the database schema over time in sync with the changes made in the application's data model (e.g., adding/removing fields, changing data types, etc.). Migrations allow developers to evolve the database schema in a structured and manageable way without losing data or causing inconsistency between the application's model and the actual database.
03 Jan, 2025
Most Frequently asked Interview Questions of entity-framework
Database concurrency refers to the situation where multiple users or processes try to access and modify the same data simultaneously. In a multi-user environment, this can lead to problems such as lost updates, where one user's changes overwrite another's, or dirty reads, where data is read before it is fully committed.
03 Jan, 2025
Most Frequently asked entity-framework Interview Questions
Entity Framework (EF) is an open-source Object-Relational Mapping (ORM) framework for .NET applications, developed by Microsoft. It allows developers to interact with databases using .NET objects rather than SQL queries, making database manipulation more intuitive and integrated within the application code.
03 Jan, 2025
Most Frequently asked entity-framework Interview Questions (2024)
Lazy loading in Entity Framework (EF) is a technique used to delay the loading of related data until it is specifically needed. It allows entities and their related navigation properties to be loaded from the database only when they are accessed for the first time, rather than being eagerly loaded along with the parent entity. This can help improve performance by reducing the amount of data retrieved initially, especially when the related data is not always required.
03 Jan, 2025
Most Frequently asked entity-framework Interview Questions and Answers
Entity Framework (EF) provides a powerful and flexible way to manage changes to the database schema over time through a feature known as migrations. Migrations help you evolve your database schema as your application’s data model (C# classes) changes, ensuring that the database structure and the application code stay in sync.
01 Jan, 2025
Most Frequently asked winforms Interview Questions (2024)
WinForms (Windows Forms) and WPF (Windows Presentation Foundation) are both frameworks for building desktop applications on the Windows platform. However, they differ significantly in terms of design, capabilities, and modern features. Let’s dive into the details of each framework and compare them.
29 Dec, 2024
Most Frequently asked asp.net-mvc Interview Questions (2024)
ASP.NET MVC and ASP.NET Web Forms are two different web application frameworks in the .NET ecosystem, each with its own architecture and approach to building web applications. Below is an explanation of what each framework is and the key differences between them.
27 Dec, 2024
Most Frequently asked asp.net Interview Questions (2024)
ASP.NET is a free, open-source web framework developed by Microsoft for building modern web applications, websites, and APIs. It is part of the .NET ecosystem and is used to create dynamic, high-performance web applications with support for multiple programming languages such as C# and Visual Basic.
27 Dec, 2024