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

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

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System Analysis and Design
Most algorithms follow the format of

Entering the input items, then processing the input items, and then displaying the output items
Entering the output items, then processing the output items, and then displaying the output items
Entering the input items, then processing the output items, and then displaying the output items
Entering the output items, then displaying the output items, and then processing the output items
Entering the input items, then displaying the input items, and then processing the output items

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System Analysis and Design
System prototyping helps the designer in

all of the listed here
communicating to the user, quickly, how the system, when developed, will look like and get a feedback.
making the programmers understand how the system will function.
giving a demo of the software, to the system manager to whom he reports

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