System Analysis and Design
A couple:

means that the upper module has the capability of calling the lower module
is a data item that moves from one module to another
None of these
is represented by a line joining two modules
None of these

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System Analysis and Design
Rapid prototyping proves the quality of a design by

having a program simulate the real system
both (a) and (b)
None of these
having a data flow diagram
having the system analyst present an overview of the design to users, programmers, and consultants

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