Web / WebAssembly Interview Questions 2026
Published July 22, 2026 · Updated July 22, 2026
3 Web / WebAssembly interview questions from General, TCS and more. Real questions from Technical, System Design, and HR rounds.
3 questions
Companies: General, TCS
All Web / WebAssembly Questions
What is CORS and why can't you just 'fix' it by disabling the check in the browser?
Explain the difference between long-polling, WebSocket, and Server-Sent Events (SSE) for real-time features.
What is WebAssembly (WASM) and when would you use it in a web application?
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Frequently asked questions
What is CORS and why can't you just 'fix' it by disabling the check in the browser?
What is CORS and why can't you just 'fix' it by disabling the check in the browser?
Explain the difference between long-polling, WebSocket, and Server-Sent Events (SSE) for real-time features.
Explain the difference between long-polling, WebSocket, and Server-Sent Events (SSE) for real-time features.
What is WebAssembly (WASM) and when would you use it in a web application?
What is WebAssembly (WASM) and when would you use it in a web application?