System Analysis and Design
Backup and recovery procedures are primarily implemented to

All of these
None of these
to provide data redundancy
handle the contingency when a file gets corrupted
to show different versions of data and programs

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

None of these
to identify a top level function and then create a hierarchy of lower level modules and components
All of these
to identify the top level functions by combining many smaller components into a single entity.
to prepare flowcharts after programming has been completed

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