System Analysis and Design
During the maintenance phase

System requirements are established
Programs are tested
System analysis is carried out
None of the listed here

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System Analysis and Design
Cost-Benefit analysis

compares the cost, with the benefits, of introducing a computer-based system
evaluates the tangible and non-tangible factors
All of these
estimates the hardware and software costs
None of these

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

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

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System Analysis and Design
Top-down programming is

a map of the programmer's view of the data
a series or group of components that perform one or more operations of a more complex system
a group of related fields
an approach in which the top module is first tested then program modules are added from the highest level to the lowest level

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