System Analysis and Design
To reconstruct a system, which of the following key element(s) must be considered :

outputs and inputs
control and processors.
all of the listed here
feedback and environment

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

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

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System Analysis and Design
A system analyst designs a new system by

identifying sub systems and the interfaces between sub systems
None of these
developing the system as a large, single unit
adopting a developed system to the present environment
propose alternatives to the current system

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