Quizzes

Test what you know. Pass a quiz and get a certificate you can share.

Tooling

Git in everyday work

Branching, rewriting history and the commands that are safe to run on shared branches.

3 questions

~3 min

Pass at 60%

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Fundamentals

Equality, closures and the event loop — the parts that show up in every bug report.

4 questions

~3 min

Pass at 60%

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Back-end

The parts of HTTP that decide whether your API is correct, cacheable and safe to retry.

4 questions

~10 min

Pass at 70%

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Front-end

How React decides to re-render, what state updates actually do, and where effects fit in.

5 questions

~4 min

Pass at 70%

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