System Analysis and Design
Conversion method in which users, being used to an old system, continue to use the old system, along with the new system, is

Parallel run
Multiprocessing
Multitasking
None of these
All of these

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System Analysis and Design
Unit 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
None of these

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