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← All Practice Tests
Beginner⏱ 60 min20 questions200 pts

Full-Stack Developer — Fundamentals

Covers HTML/CSS, JavaScript, React basics, Node.js, SQL, and REST API concepts.

JavaScript
React
SQL
CSS
REST API

3,241 attempts

Full-Stack Developer — Fundamentals

0/20 answered

60:00
1

What does `typeof null` return in JavaScript?

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