Stress reaction test

From Memory Alpha, the free Star Trek reference

The stress reaction test is one of the requirements prospective cadets must pass before they are accepted into Starfleet Academy. The applicant is tested in a holosuite or holodeck to gauge how they deal with an unexpected situation, and their performance is graded by a senior officer such as the chief of operations.

When Nog applied to the academy, Chief O'Brien proctored his stress reaction test in one of Quark's holosuites. Nog studied hard and was prepared for the test, but he erroneously believed it would be a test on his performance as pilot of a runabout. The actual test put Nog in Deep Space 9's Operations center; O'Brien had intentionally led Nog to believe otherwise, as this made it a truly stressful test rather than routine review of something Nog knew well.

On his first try, Nog failed because Quark had sabotaged the holo-program. When his father Rom found out, Rom went straight to Captain Sisko with the problem and was furious with his brother. Nog later passed and was accepted into the academy. (DS9: "Facets")