System Analysis and Design
During the maintenance phase

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

ANSWER DOWNLOAD EXAMIANS APP

System Analysis and Design
System prototyping helps the designer in

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

ANSWER DOWNLOAD EXAMIANS APP

System Analysis and Design
The black-box concept:

is invoked by describing a system in terms of inputs and outputs, leaving the transformation process a black box.
assumes that inputs and outputs will remain stable
assumes that the black box is independent
None of these
All of these

ANSWER DOWNLOAD EXAMIANS APP