System Analysis and Design
A couple:

is represented by a line joining two modules
is a data item that moves from one module to another
None of these
means that the upper module has the capability of calling the lower module
None of these

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System Analysis and Design
Which of the following is not a characteristic of structured system development?

All of these
specification of the interfaces between modules
partitioning of systems into manageable levels of detail
None of these
the use of graphical tools, such as data-flow diagrams, to model system

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System Analysis and Design
An audit trial is

designed to permit tracing of any input record or process performed on a system, back toits original sources
All of these
post-auditing the system after its implementation
None of these
test data used by the system auditor

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