Building React App MCQ React Build Practice Questions

Direction: Choose the correct option

Which command builds a React app for production?

A. npm run dev

B. npm build

C. npm run build

D. npm start

Direction: Choose the correct option

Where is the production build output placed?

A. build/ folder

B. dist/ folder

C. public/ folder

D. out/ folder

Direction: Choose the correct option

What is the purpose of the build step?

A. To run tests

B. To install dependencies

C. To start the dev server

D. To minify and optimize code for production

Direction: Choose the correct option

Which environment variable can be used to set the public URL in production?

A. REACT_APP_PUBLIC_URL

B. HOST

C. PUBLIC_URL

D. BASE_URL

Direction: Choose the correct option

What is tree shaking?

A. Removing unused code from the final bundle

B. Shaking the DOM tree

C. A performance optimization

D. A build tool

Quipoin Menu