System Analysis and Design
Which of the following is the most critical requirement of a Passenger Reservation System?

printing of tickets
None of these
ease of programming
response time
graphical user Interface

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System Analysis and Design
The approach used in top-down analysis and design is

to prepare flow charts after programming has been completed
all of the listed here
to identify a top level function an d then create a hierarchy of lower-level modules and components.
to identify the top level functions by combining many smaller components into a single entity

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System Analysis and Design
The black-box concept:

assumes that inputs and outputs will remain stable
All of these
None of these
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

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