Free practice tests

MERN Stack Developer practice test

MongoDB, Node.js, React and JavaScript. Topics: MongoDB, Node.js, React, JavaScript, REST API. Free, timed and scored instantly, with an explanation for every answer.

Search a job role, an exam code or a skill. We build the test, time it and score it, and show you where to improve.

or Upload your CV log in first; we read your skills and pick the topics.

Before you start

The test runs in fullscreen and watches for you leaving it.

  • Pressing Esc, switching tabs or apps, or clicking a notification each count as one exit.
  • On the 4th exit the test submits automatically, with whatever you have answered so far.
  • Close other apps and silence notifications now. Keep your phone away from the screen.
  • Once started, the attempt counts even if you leave.