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Next.js Interview Questions and Answers

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Ques 16. How can you handle authentication in a Next.js application?

Authentication in Next.js can be handled using various methods such as third-party providers like Auth0, custom authentication APIs, or middleware like 'next-auth'.

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Ques 17. What is the purpose of 'API routes' in Next.js?

API routes in Next.js allow you to build serverless functions that handle backend logic. These routes are defined in the 'pages/api' directory.

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Ques 18. Explain the concept of 'Automatic Static Optimization' in Next.js.

Automatic Static Optimization is a feature in Next.js that automatically optimizes the delivery of static assets by serving them from a CDN and generating HTML at build time.

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Ques 19. How can you deploy a Next.js application?

Next.js applications can be deployed to various platforms, including Vercel, Netlify, and custom servers. These platforms often support automatic deployments based on your project repository.

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Ques 20. What is the purpose of the '404.js' file in the 'pages' directory?

The '404.js' file in the 'pages' directory is a custom 404 error page. It allows you to define a React component that will be displayed when a user accesses a non-existent route.

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