System Analysis and Design
The black box concept is based on the assumption(s) that;

black boxes are dependent or environments
None of these
All of these
the suprasystem is stable
the relationship between the inputs and output is stable

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System Analysis and Design
Which of the following is not a requirement of structured design?

It should use many GOTO statements
The code should be executed in a top-to-bottom fashion within each module
Each module should be as independent as possible of all other modules, except its parent
None of these
It should be made up of a hierarchy of modules

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