System Analysis and Design
To reconstruct a system, which of the following key element(s) must be considered :

control and processors.
all of the listed here
outputs and inputs
feedback and environment

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System Analysis and Design
In Decision trees

the branch depends on the condition and decisions to made
the root is drawn on the left and is the starting point on the decision sequence.
None of these
All of these
nodes represent the conditions, with the right side of tree listing the actions to be taken

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

to identify the top level functions by combining many smaller components into a single entity
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.

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System Analysis and Design
A menu-driven system

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

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System Analysis and Design
Sequential or series testing is

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
is checking the logic of one or more programs in the candidate system
testing changes made in an existing or a new program

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