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Top 50 Web Platform Interview Questions

The most frequently asked Web Platform questions across all roles and companies, ranked by real interview frequency. Updated daily.

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Technical FundamentalsStart here. 46 questions · ~368 min

Frontend State ManagementHard

Recently asked

Explains how to classify frontend state and choose React state-management tools without creating unnecessary global state.

ToolsWeb Platformui frameworks

AirbusCCorGTAEEasyship

React Component Lifecycle and Side EffectsMedium

Explain React rendering, committing, mounting, updating, unmounting, and managing effects with cleanup and dependencies.

reactWeb Platformui frameworksHHelsing

Fora TravelCCareerswift

REST vs GraphQL RevisitedMedium

Recently asked

Tests when to choose REST or GraphQL, and the practical trade-offs in API shape, fetching, and caching.

networking basicsrestrest apisSSeismicRReonicHHCLTech - Australia and New Zealand

React FundamentalsHard

Recently asked

Tests React fundamentals: hooks, reconciliation through the Virtual DOM, state ownership, and side-effect management.

reactWeb Platformui frameworksCCreative Capsuleoosapiens

Outsourced

What Happens When You Enter a URLHard

Recently asked

Explains DNS, connection setup, HTTP requests, response processing, and browser rendering after URL submission.

network functionsnetworking basicsWeb PlatformNNew York TimesAAiven

Spacex

Explain Event Loop and PromisesHard

Recently asked

Explain how the JavaScript event loop schedules tasks and microtasks, and how Promise settlement controls asynchronous callback execution.

Async Programmingasynchronous workjavascriptHHeadoutYYubi

Paytm

Relational vs NoSQL DifferencesHard

Recently asked

Compare Angular and React internals, conventions, ecosystems, and tradeoffs, then justify a framework choice for a given project.

reactWeb Platformui frameworksIInfinite Computer SolutionsPPattem Digital TechnologiesTTalan

Optimizing a Slow NextJS PageHard

Tests how candidates diagnose and optimize Next.js loading across server rendering, data fetching, bundles, assets, caching, and Core Web Vitals.

performance optimizationWeb Platformtechnical fundamentals

Luxoft IndiaSStellar Solutions

Infor

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