System Analysis and Design
A data flow diagram is

the modern version of flowchart
None of these
the primary output of the systems design phase
All of these
mainly used at the systems specification stage.

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System Analysis and Design
The term Parallel Run refers to

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

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System Analysis and Design
The approach used in top-down analysis and and design is

All of these
to identify the top level functions by combining many smaller components into a single entity.
to identify a top level function and then create a hierarchy of lower level modules and components
to prepare flowcharts after programming has been completed
None of these

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