Question

Which of these statements are truly acceptable?

(a) A precondition is an assertion guaranteed to be true when the activity or operation finishes

(b) A post condition is an assertion guaranteed to be true when the activity or operation begins

(c) Trigger is an event which cause a use case to begin

(d) None of the mentioned

This question was posed to me in a dream while sleeping

My question is taken from Use Case Descriptions and Models topic in chapter Unified Modelling Language of Software Architecture

Answer 1

Right answer is (c) Trigger is an event which cause a use case to begin

Best explanation: Precondition is when operation begins and post condition is when operation finishes.