OOAD

1.(a)Define a usecase?what are its common properties,contents and uses?
  (b)List out the various steps involved in modeling the content of a system?

2.What is a state?what are the several parts of a state?Enumerate the steps to model a family of signals?

3.Write about swimalanes in activity diagrams?

4.Explain briefly about the following terms:
  (i)Action states and activity states
  (ii)Transitions
  (iii)Branching.

5.(a)What are the common properties,contents and uses of the component diagrams?
  (b)Enumerate the steps to model source code and API?

6.Explain briefly about the following terms:
  (i)Signals
  (ii)Time and change events
  (iii)Call events
  (iv)Sending and receiving events.