preliminary system design 1

I need an answer to the following questions.

1.Select a system of your choice and develop operational functional flow block diagrams (FFBDs) to the third level. Select one of the functional blocks and develop maintenance functional flows to the second level. Show how the maintenance functional flow diagrams evolve from the operational flows.

2.Describe what is meant by interoperability? Why is it important

3.What is meant by design criteria? How are they developed? How are they applied in the design process?

4.Assume that you are a design engineer and are looking for some analytical models/tools to aid you in the synthesis, analysis, and evaluation process. Develop the criteria that you would apply in selecting the most appropriate tools for your application

all the answers of the questions is found in the attached document