What is a Deadlock in SQL and How Can It Be Resolved or Prevented?
📘 Quick Intro
ASP.NET Core is an open-source, cross-platform web framework developed by Microsoft.
It enables you to build modern, cloud-based, internet-connected applications.
It's a complete rewrite of the original ASP.NET, designed for performance and flexibility.
🧠 Analogy / Short Story
Think of ASP.NET Core like a Swiss Army knife: lightweight, portable, and designed to adapt to any situation—whether you're building a blog, an API, or a real-time app. Unlike the bulky older ASP.NET toolbox, Core is sleek and modular, fitting perfectly in modern cloud environments.
🔧 Technical Explanation
ASP.NET Core is built on the .NET Core runtime, making it cross-platform and modular. It unifies MVC and Web API into a single framework, uses middleware to handle requests, and supports Dependency Injection natively. With features like Kestrel server, Razor Pages, and minimal APIs, it’s optimized for performance and maintainability.
🎯 Purpose & Use Case
- ✅ Build cross-platform web apps (Windows, Linux, macOS)
- ✅ Create high-performance RESTful APIs
- ✅ Develop cloud-native microservices
- ✅ Deploy to containers or Azure App Services
- ✅ Build Razor Pages, Blazor apps, or MVC-based web apps
💻 Real Code Example
public class Program
{
public static void Main(string[] args)
{
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build();
app.MapGet("/", () => "Hello ASP.NET Core!");
app.Run();
}
}
❓ Interview Questions & Answers
- Q: What is ASP.NET Core?
A: A cross-platform, open-source web framework for building modern web apps and APIs. - Q: What are the key benefits of ASP.NET Core?
A: Cross-platform, high performance, modular, and cloud-ready. - Q: What is Kestrel in ASP.NET Core?
A: A lightweight, high-performance web server used internally. - Q: Does ASP.NET Core support Dependency Injection?
A: Yes, it has built-in support for DI out-of-the-box. - Q: Is ASP.NET Core suitable for microservices?
A: Yes, it's designed for building scalable microservice architectures. - Q: What platforms does ASP.NET Core run on?
A: Windows, Linux, and macOS. - Q: What is the role of middleware in ASP.NET Core?
A: Middleware handles HTTP requests and can be composed into a pipeline. - Q: How does ASP.NET Core improve performance?
A: Through a lightweight runtime, async support, Kestrel, and minimal APIs. - Q: What is Razor Pages?
A: A page-based model for building dynamic web UIs in ASP.NET Core. - Q: How is ASP.NET Core deployed in production?
A: Via Docker, Azure, or any web server with reverse proxy setup.
📝 Multiple Choice Questions
Q1: Which of the following is true about .NET Core?
- A. Only works on Windows
- B. It is cross-platform and open-source
- C. It is a paid Microsoft product
- D. It replaces Java entirely
Q2: What is the default entry point of a .NET Core application?
- A. Startup.cs
- B. Main.cs
- C. Program.cs
- D. Init.cs
Q3: Which of the following CLI command creates a new .NET Core web app?
- A. dotnet new mvc --web
- B. dotnet create webapp
- C. dotnet new webapp
- D. dotnet build web
Q4: Which language is NOT officially supported by .NET Core?
- A. C#
- B. F#
- C. VB.NET
- D. Python
Q5: What is Kestrel in .NET Core?
- A. Logging Framework
- B. Web Server
- C. ORM Tool
- D. Authentication Middleware
Q6: Which of these is the correct command to restore NuGet packages in a .NET Core project?
- A. nuget restore
- B. dotnet restore
- C. dotnet build --restore
- D. restore-packages
Q7: What is the role of `Startup.cs` in a .NET Core web app?
- A. Runs the database migration
- B. Configures services and request pipeline
- C. Hosts the web server
- D. Compiles Razor views
Q8: Which method adds a service with per-request lifetime in .NET Core DI?
- A. AddSingleton
- B. AddScoped
- C. AddTransient
- D. AddPerRequest
Q9: Which command publishes a .NET Core app for production?
- A. dotnet run --env Prod
- B. dotnet build --prod
- C. dotnet publish --configuration Release
- D. dotnet deploy --release
Q10: What major version unified .NET Core and .NET Framework?
- A. .NET Core 5
- B. .NET 5
- C. .NET 3.1
- D. .NET Framework 4.8
💡 Bonus Insight
ASP.NET Core’s open-source nature allows for faster community contributions and support. Microsoft’s commitment to it ensures long-term support and cloud integration, especially in Azure.
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