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

None of these
Multitasking
All of these
Parallel run
Multiprocessing

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System Analysis and Design
Unit testing is

None of these
testing changes made in an existing or a new program
running the system with line data by the actual user
making sure that the new programs do in fact process certain transactions according to Specifications
is checking the logic of one or more programs in the candidate system

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