Questions with Answers on System & Software concept

What is the Definition of software?

What are Integrated Systems and Sub -systems in software?
What are the Modules in software?
Explain  Software life cycles.
Explain Software process models.
What are the Activities in each phase of Software life cycle?
Explain the Control and life -cycle management of correct, reliable, maintainable and cost effective software?
How the Software Costs are managed?
Explain quality costs and economics of software.
Explain the Software documentation.