System Analysis and Design
Structured design methodology is an approach to design that adheres to rales based on principles such as

bottom-up design
None of these
top-down refinement
data flow analysis
All of these

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System Analysis and Design
The black-box concept:

None of these
assumes that the black box is independent
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.

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System Analysis and Design
Sequential or series testing is

testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications

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System Analysis and Design
The advantage of Purchase Option is (are)

No financing is requird. The risk of system obsolescence is shifted to the lessor
None of these
All of these
Insurances, maintenance, and other expenses are included in the rental charge
the flexibility of modifying the system at will

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