1.Which of the following provides holistic view of behavior across many objects?

state model

none of the above

class model

interaction model

2.What refers to sequence of steps that make up a complex process? activity model state model use case model sequence model

3.

Learner Foreign Language Proficiency Level Refer picture above. Which statement is implied by the class diagram? Every learner can study only one foreign language. Every foreign language can be studied only by one learner. Every learner can have only one proficiency level per foreign language. Every proficiency level can be recorded for at most one (learner, foreign language) pair