| 1 | How do you create a custom 404 not found page in Next.js? Next.js › Error Handling & Not Found Pages | Next.js | Error Handling & Not Found Pages | Beginner |
| 2 | How would you manually trigger a not found response when a specific piece of data, like a product, does not exist? Next.js › Error Handling & Not Found Pages | Next.js | Error Handling & Not Found Pages | Intermediate |
| 3 | How would you set up a comprehensive error handling strategy across a large Next.js application with many route segments? Next.js › Error Handling & Not Found Pages | Next.js | Error Handling & Not Found Pages | Advanced |
| 4 | How do you create a custom error page for a specific route segment in the App Router? Next.js › Error Handling & Not Found Pages | Next.js | Error Handling & Not Found Pages | Beginner |
| 5 | How does the global-error.js file differ from a regular error.js file in the App Router? Next.js › Error Handling & Not Found Pages | Next.js | Error Handling & Not Found Pages | Intermediate |
| 6 | What causes a hydration mismatch error, and how can you fix one? Next.js › Client Components & Hydration | Next.js | Client Components & Hydration | Intermediate |
| 7 | How would you handle errors gracefully inside a server action and display a meaningful message to the user? Next.js › Server Actions & Mutations | Next.js | Server Actions & Mutations | Advanced |
| 8 | What are the main types of tests you would write for a Next.js application? Next.js › Testing Next.js Applications | Next.js | Testing Next.js Applications | Beginner |
| 9 | What is a catch-all route segment, and when would you use one? Next.js › Dynamic Routes & Catch-All Segments | Next.js | Dynamic Routes & Catch-All Segments | Intermediate |
| 10 | How do you access dynamic route parameters inside a route handler defined with a dynamic segment? Next.js › Route Handlers (API Route.js) | Next.js | Route Handlers (API Route.js) | Intermediate |