System Analysis and Design
A couple:

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

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System Analysis and Design
The term Parallel Run refers to

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

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