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
None of these
the processing of two different jobs initiated from two terminals.
the concurrent operation of an existing system and a new system

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System Analysis and Design
Sequential or series testing is

running the system with line data by the actual user
is checking the logic of one or more programs in the candidate system
testing changes made in an existing or a new program
making sure that the new programs do in fact process certain transactions according to Specifications

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

to identify a top level function an d then create a hierarchy of lower-level modules and components.
all of the listed here
to identify the top level functions by combining many smaller components into a single entity
to prepare flow charts after programming has been completed

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