System Analysis and Design
System prototyping helps the designer in

making the programmers understand how the system will function.
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.
all of the listed here
giving a demo of the software, to the system manager to whom he reports

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

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

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System Analysis and Design
An open rectangle

None of these
identifies data flow
defines a source or destination of system data
is a data store-data at rest, or a temporary repository of data
represents a process that transforms incoming data flow(s) into outgoing data flows

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