15 to 30 random questions in 15 to 30 minutes, by the level you choose: app router, server components, caching, routing, actions, middleware. After you submit you get your score, your strong and weak topics, and the right answer with an explanation for every question.
Want to revise first? Read the Next.js interview questions and answers.
The test covers 13 topics across three levels. Each attempt picks 15 to 30 questions at random, by the level you choose, so every attempt is different.
One question from each level, the way they appear in the test. A new set comes on the 1st of every month. Try it, then open the answer.
Answer: In images.remotePatterns in next.config.js. The image optimiser only fetches from hosts you allow, so others cannot use your server to resize any image. images.remotePatterns lists the allowed protocol, hostname and path; the older domains option is deprecated.
Answer: pageExtensions. pageExtensions lists the file extensions Next.js treats as pages and route files. Adding 'md' and 'mdx' with the @next/mdx plugin lets app/blog/page.mdx render as a page. The other option names do not exist.
Answer: A 404 for the route. On a hard navigation Next.js cannot recall the slot's earlier state, so it looks for default.tsx, and without one the route renders a 404. On soft navigation the slot would keep showing what it showed before.
Take the full Next.js mock test: 15 to 30 questions and 15 to 30 minutes, by level.
A question counts as right only when you pick exactly the right option, or all the right options where it says so; a question left blank counts as wrong. Your score is the share of the test's questions you got right (15 to 30, by level). The result also scores every topic, so you know what to revise before the interview.
Yes. The Next.js mock test is free. You need a free CoreHRx Jobs account to start it, so your score and the topics to work on are saved.
It depends on the level: Fresher has 15 questions in 15 minutes, Intermediate has 20 questions in 20 minutes, Experienced has 30 questions in 30 minutes. They are multiple-choice questions picked at random from a larger bank of Next.js questions at your level, so every attempt is different.
The questions cover Server and Client Components, Route Handlers and Server Actions, Caching and Revalidation, Dynamic Routing, Layouts, Loading and Error UI, Rendering Strategies, App Router Basics, Data Fetching, Images, Fonts and Metadata, Env Variables and Deployment, Middleware, Performance, Pages Router. Your result shows how you did in each topic.
Fresher if you are a student or have less than a year of experience, Intermediate for 1 to 5 years at work, and Experienced for 5 years or more.
Only your best Next.js score, and only when it is 60% or more. It shows on the job applications you send on CoreHRx. Lower scores stay private.
Yes, up to 10 tests a day. Each attempt picks questions you have not seen recently first.
