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

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

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System Analysis and Design
Sequential or series testing is

making sure that the new programs do in fact process certain transactions according to Specifications
testing changes made in an existing or a new program
is checking the logic of one or more programs in the candidate system
running the system with line data by the actual user

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