Knowledge Check — full exam simulation

A timed, graded mock of the CCO Core written exam, presented like the real Pearson/PSI test-center screen so there are no surprises on test day.

• 90 questions, domain-weighted (Site 18 · Operations 23 · Technical 25 · Load Charts 24), drawn at random and re-shuffled every time.
• 90-minute countdown. The test auto-submits when time runs out.
• No feedback during the test. You can change answers, flag questions, and review before submitting.
• On-screen tools: a scratch pad/whiteboard for working math by hand (no calculator on the Core exam — Domain 4 math is done by hand). The load chart is shown on chart questions (open-book, as on the real exam); other questions are closed-book.
• You're graded at the end with a per-domain breakdown.