System Analysis and Design
The black-box concept:

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

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System Analysis and Design
A pseudocode is

a protocol used in data communication
a computer generated random number
a machine code
an easy way to communicate the logic of a program, in English¬like statements
None of these

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System Analysis and Design
A menu-driven system

is required only for on-line systems
can be used only by computer professionals
presents options and allows the user to make selections
None of these
increases the operator's work

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