This revision poster provides students with a clear guide to the command words and key vocabulary used in OCR GCSE Computer Science exam questions. It explains exactly what examiners mean by terms such as describe, explain, evaluate, advantage, drawback, and pre-requisite, helping students to decode questions accurately and avoid losing marks through misunderstanding. Designed as a student-friendly classroom poster or individual revision mat, this resource supports exam preparation by boosting confidence in tackling both short-answer and extended-response questions.