System Analysis and Design
Back-up procedure helps in

restoring the operation whenever there is a disk failure
restoring the data files whenever there is a system crash
none of the listed here
all of the listed here

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

to prepare flowcharts after programming has been completed
None of these
to identify a top level function and 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.
All of these

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System Analysis and Design
HIPO

None of these
is a forms-driven technique in which standard forms are used to document the information
All of these
captures the essence of top down decomposition.
consists of a hierarchy chart and an associated set of input/process/ output charts

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