software engineering principle and practice

d) i) Suggest an appropriate architectural model for the following systems and give reasons for your choice: (4 marks)

An automated ticket-issuing system used by passengers at a railway station. A computer controlled video conferencing system that allows video, audio, and computer data to be visible to several participants at the same time.

ii) Briefly describe two types of control model for software design. Give an example of the application of each.