How do you manage state in a large front-end application?" Tests understanding of tools like Redux, Context API, or React Query. "Explain the MVC architecture and how you've applied it." Evaluates architectural knowledge and practical implementation. "How do you ensure API security and handle authentication?" Looks for familiarity with OAuth, JWT, HTTPS, etc. "Describe how you'd optimize a slow-loading web page." Focuses on performance optimization and debugging. "How do you handle database schema changes in production?" Checks knowledge of migrations and safe deployment practices. "What’s the difference between server-side rendering and client-side rendering?" Tests understanding of rendering strategies and their trade-offs. "Have you worked with CI/CD pipelines? Describe your setup." Evaluates DevOps familiarity and deployment workflow.