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Top 8 Dot Net interview questions and for experience 10 year+

 Dot Net interview questions and for experience 10 year+:

1. Can you explain your experience with .NET Modernization?

Suggested Answer: "I have extensive experience modernizing legacy .NET applications. For instance, I've successfully migrated applications from .NET Framework to .NET Core to leverage better performance, cross-platform support, and microservices architecture. This included updating dependencies, re-architecting monolithic applications into microservices, and implementing containerization using Docker and Kubernetes. I also optimized the application performance by reducing startup times and improving response times through asynchronous programming and efficient database queries."

2. How have you used GitHub Advanced Security in Azure DevOps?

Suggested Answer: "I have leveraged GitHub Advanced Security to ensure the security and compliance of our codebase. This includes setting up code scanning to identify vulnerabilities, utilizing secret scanning to detect leaked credentials, and configuring Dependabot to monitor dependencies for vulnerabilities. I also integrated these security features within Azure DevOps pipelines to automate security checks during CI/CD processes, ensuring that only secure code is deployed."

3. What is your approach to performance tuning and optimization in .NET applications?

Suggested Answer: "My approach starts with identifying bottlenecks using tools like Application Insights, dotTrace, or PerfView. Then, I focus on optimizing the most critical areas, such as:

  • Improving database performance: Optimizing SQL queries, adding indexes, and using stored procedures.
  • Code optimization: Minimizing memory usage, implementing caching strategies, and using asynchronous programming.
  • IIS optimization: Configuring application pools, enabling compression, and fine-tuning connection limits and request queues.
    One example was reducing the response time of a web application by 40% by implementing these techniques."

4. Can you walk me through your experience with ASP.NET Core and MVC?

Suggested Answer: "I've worked extensively with ASP.NET Core and MVC to build scalable, secure, and maintainable web applications. My experience includes:

  • Designing RESTful APIs using ASP.NET Core Web API with proper routing and versioning.
  • Implementing MVC patterns for clean separation of concerns, which improves testability and maintainability.
  • Securing applications with OAuth, JWT, and ASP.NET Core Identity.
  • Optimizing Razor views for better performance and UI responsiveness.
    For example, I developed an enterprise-level dashboard using ASP.NET Core MVC, integrating with microservices and providing real-time updates using SignalR."

5. How do you ensure high availability and reliability with IIS-hosted applications?

Suggested Answer: "I ensure high availability and reliability by:

  • Configuring application pools with proper recycling settings to avoid memory leaks.
  • Enabling load balancing and failover setups with ARR or reverse proxies.
  • Using SSL/TLS for secure communication and URL Rewrite for routing traffic efficiently.
  • Monitoring application health using tools like AppDynamics or Application Insights and automating alerts.
    For example, I implemented a load-balanced IIS setup for a high-traffic application, achieving 99.99% uptime."

6. Can you describe a complex problem you solved using GitHub Enterprise?

Suggested Answer: "While working with GitHub Enterprise, I led a project to implement secure and scalable CI/CD pipelines. The challenge was integrating multiple repositories with strict compliance requirements.

  • I used GitHub Actions for automation and configured fine-grained access controls.
  • Set up branch protection rules to enforce code reviews and security scans.
  • Integrated GitHub with Azure DevOps to streamline deployment processes while maintaining a single source of truth.
    This setup reduced deployment time by 30% and improved collaboration across teams."

7. How do you stay updated with advancements in .NET and related technologies?

Suggested Answer: "I follow official Microsoft documentation, participate in forums like Stack Overflow, and regularly attend conferences such as .NET Conf. I also contribute to open-source projects and explore new features in preview versions of .NET releases to stay ahead. This proactive approach has allowed me to adopt best practices and implement modern solutions in my projects."

8. What are the key advantages of .NET Core over .NET Framework?

Suggested Answer: ".NET Core offers significant benefits, including:

  • Cross-platform support: Applications can run on Windows, Linux, and macOS.
  • Better performance: Optimized for high throughput and low latency.
  • Microservices architecture: Ideal for building and hosting services in containers.
  • Modular framework: Smaller runtime with only required packages.
    For example, transitioning from .NET Framework to .NET Core in one of my projects improved deployment flexibility and reduced hosting costs."


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