System Analysis and Design
A couple:

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

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System Analysis and Design
The term Parallel Run refers to

the concurrent operation of an existing system and a new system
None of these
the processing of two different jobs initiated from two terminals.
the same job run on two different computer to test their speeds
All of these

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