15 real Build & Tooling questions from the React Native bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.
1. What is Metro bundler?
Junior
A.the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development
B.the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio
C.shipping new JavaScript and asset bundles directly to installed apps without resubmitting to the app stores
D.the development feature that instantly applies edits to a running app while preserving component state where possible
2. Which term means: "the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development"?
A.Metro bundler — the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio
B.Metro bundler — the setup that exposes the raw iOS and Android project folders, giving full control to add any custom native code or library
C.Metro bundler — the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development
D.Metro bundler — shipping new JavaScript and asset bundles directly to installed apps without resubmitting to the app stores
5. Which term means: "the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio"?
A.Expo managed workflow — the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio
B.Expo managed workflow — the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development
C.Expo managed workflow — the development feature that instantly applies edits to a running app while preserving component state where possible
D.Expo managed workflow — the setup that exposes the raw iOS and Android project folders, giving full control to add any custom native code or library
A.bare workflow — the development feature that instantly applies edits to a running app while preserving component state where possible
B.bare workflow — the setup that exposes the raw iOS and Android project folders, giving full control to add any custom native code or library
C.bare workflow — the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development
D.bare workflow — shipping new JavaScript and asset bundles directly to installed apps without resubmitting to the app stores
A.over-the-air updates — the JavaScript bundler that resolves modules, transforms code, and serves a single packaged file with fast refresh during development
B.over-the-air updates — shipping new JavaScript and asset bundles directly to installed apps without resubmitting to the app stores
C.over-the-air updates — the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio
D.over-the-air updates — the setup that exposes the raw iOS and Android project folders, giving full control to add any custom native code or library
A.Fast Refresh — the setup that exposes the raw iOS and Android project folders, giving full control to add any custom native code or library
B.Fast Refresh — the approach where the framework handles native build configuration so developers write only JavaScript without touching Xcode or Android Studio
C.Fast Refresh — shipping new JavaScript and asset bundles directly to installed apps without resubmitting to the app stores
D.Fast Refresh — the development feature that instantly applies edits to a running app while preserving component state where possible
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