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What are the advantages of using .NET Core?

📌 Introduction

.NET Core is a modern, open-source, cross-platform framework from Microsoft that is optimized for building cloud-native and high-performance applications.

🚀 Advantages of .NET Core

  • Cross-platform: Runs on Windows, macOS, and Linux.
  • High performance: Great for web APIs, microservices, and scalable systems.
  • Modular architecture: Uses lightweight NuGet packages.
  • Open-source: Actively developed on GitHub with community contributions.
  • Cloud-ready: Designed to work with Docker, Kubernetes, and Azure.
  • Unified development model: Build apps for web, desktop, IoT, and more.
  • Side-by-side versioning: Run multiple versions of .NET Core on the same machine.

🧠 Real-world Analogy

Think of .NET Core like a universal remote that can control many devices (apps across platforms) without needing separate remotes for each one. It simplifies life while giving you high control and flexibility.

💻 Code Example

// Sample ASP.NET Core minimal API
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddControllers();

var app = builder.Build();
app.MapControllers();
app.Run();

🎯 Interview Q&A

  • Q: What makes .NET Core cross-platform?
    A: It is built to run on Windows, Linux, and macOS using a platform-agnostic runtime.
  • Q: How does .NET Core support cloud deployment?
    A: It works well with Docker, Kubernetes, and cloud platforms like Azure.
  • Q: Can multiple versions of .NET Core run on the same system?
    A: Yes, through side-by-side versioning support.
  • Q: Why is performance better in .NET Core?
    A: It’s optimized for speed and has a lightweight modular framework.
  • Q: What is the difference between .NET Core and the .NET Framework?
    A: .NET Core is cross-platform and open-source; the .NET Framework is Windows-only and older.
  • Q: How is .NET Core modular?
    A: You include only the required NuGet packages.
  • Q: Is .NET Core suitable for microservices?
    A: Yes, it’s ideal for creating lightweight and independent services.
  • Q: Where is .NET Core source code hosted?
    A: On GitHub under the .NET organization.
  • Q: What tools support .NET Core development?
    A: Visual Studio, VS Code, Rider, and the CLI.
  • Q: Is .NET Core supported by Microsoft?
    A: Yes, it is officially supported and maintained.

📝 MCQs

📝 MCQs

Q1. What is a major advantage of .NET Core?

  • Only Windows support
  • Outdated framework
  • Cross-platform support
  • No community

Q2. Which OS does .NET Core support?

  • Windows
  • Linux
  • macOS
  • All of the above

Q3. What is side-by-side versioning?

  • Installing multiple OS
  • Upgrading app to latest
  • Running multiple versions on one system
  • Using Git branches

Q4. Which organization maintains .NET Core?

  • Apple
  • Linux Foundation
  • Microsoft
  • Apache

Q5. .NET Core is...

  • Closed-source
  • Paid
  • Open-source
  • Windows-only

Q6. What type of architecture does .NET Core use?

  • Monolithic
  • Modular
  • Hybrid
  • Layered

Q7. Which editor supports .NET Core development?

  • Notepad
  • Xcode
  • VS Code
  • Paint

Q8. What can .NET Core build?

  • Only desktop apps
  • Only games
  • Web, APIs, microservices
  • No apps

Q9. Where can you find .NET Core source code?

  • StackOverflow
  • GitHub
  • CodeProject
  • Reddit

Q10. Is .NET Core container-friendly?

  • No
  • Yes
  • Only on Linux
  • Only on Azure

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